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COMPOUND RECORD / EPITALON

Epitalon (Epithalon): telomeres, studies and safetyЭпиталон

SleepLongevity
Source linked

What the studies found

Controlled study in people · 2007

Human trial: nighttime melatonin rose from 20 to 49 pg/mL

03:00 melatonin · low-baseline subgroup
20 ± 4 → 49 ± 7 pg/mLEpitalon n=12; saline n=8: 27 ± 4 → 25 ± 4 pg/mLp<0.05 versus baseline and post-treatment saline
21:00 melatonin
12 ± 3 → 25 ± 4 pg/mLSaline: 12 ± 3 → 11 ± 3 pg/mLp<0.05 versus baseline and post-treatment saline
Preserved baseline pineal function
No melatonin change in 3 Epitalon recipients

In older adults with low baseline melatonin, Epitalon increased 03:00 plasma melatonin from 20 ± 4 to 49 ± 7 pg/mL; saline changed from 27 ± 4 to 25 ± 4. Evening melatonin also rose, while daytime concentrations did not change significantly.

Study notes · methods, sources and limitations

Participants or model 40 older intervention participants: 15 Epitalon, 15 Epithalamin and 10 saline; 10 young references. Baseline survey separately included 49 older and 15 younger people.

Important limitations

  • The Epitalon low-melatonin comparison contains 12 treated and 8 saline recipients; the three Epitalon recipients with preserved function showed no change. These are hormone measurements, not demonstrated sleep improvement or lifespan extension. Human and monkey results are separate.

Adv Gerontol. 20(1):74–85 · Publication record

Original source or citation ↗

Study results and tables ↗

Comparison in people · 2002

Human retinal study reported better acuity and visual fields

Reported overall clinical effect
More than 90% of treated casesAuthors’ overall assessment; not the same endpoint as control visual-function response
Average visual-acuity gain
0.15–0.25A 0.4 gain reported in 18 eyes (7.6% as printed)
Visual-field expansion
90–120° in 64.8%Total visual-field borders; control expansion 40–50° reported in 86.9%

The authors reported a positive clinical effect in more than 90% of Epitalon-treated retinitis-pigmentosa cases. Visual acuity rose by an average of 0.15–0.25; total visual-field borders expanded by 90–120° in 64.8% of treated cases. Conventional-care controls had visual-function improvement in 31.5% of cases.

More reported outcomes
Control visual-function improvement
31.5% of casesMaximum acuity gain of 0.15 in 4.3%; acuity decreased in 4 eyes
Adverse effects
None reported by the authorsNo systematic long-term safety denominator or follow-up established
Study notes · methods, sources and limitations

Participants or model 162 patients (324 eyes), ages 18–72, examined; the report identifies 46 control patients (92 eyes).

Important limitations

  • Allocation and masking are not described sufficiently to establish a randomized trial. Percentages refer to different outcomes and sometimes eyes; they are not one common response measure. The methods state 162 patients examined and 46 controls; do not describe 162 as the treated-arm size. The paper reports 18 eyes as 7.6%, a denominator not fully reconciled in the text. Retinal-disease findings do not demonstrate healthy-person vision enhancement or longevity.

Neuroendocrinol Lett. 23(4):365–368 · Publication record

Original source or citation ↗

Study results and tables ↗

Animal research · 2007

Epitalon in pregnant rats

Offspring body weight
73.6 ± 2.6 g versus 83.4 ± 4.9 gEpitalon-exposed versus pooled control offspringDay 40Narrative describes significantly reduced growth; exact p-value/uncertainty type not specified
Parietal cortex thickness
1528 ± 34 versus 1350 ± 36 µmExposed versus pooled controlsDay 40Described as significant; exact p-value absent
Layer I thickness / layer II neuron count
137 ± 2 versus 129 ± 2 µm; 21.3 ± 0.8 versus 16.9 ± 0.5 cells per standard fieldMeasurements are structural differences, not proof of improved functionDay 40

At day 40, exposed offspring weighed 73.6±2.6 g versus 83.4±4.9 g in pooled controls. Cortical measurements increased, while behavior at day 30 suggested less exploration and more anxiety. Larger brain measurements were not demonstrated benefits.

More reported outcomes
Behavioral direction
Less exploration and open-arm activity; more time in closed arms, grooming and sniffingAuthors interpret reduced exploratory activity and increased anxietyDay 30
Neutral findings
No significant body-weight differences at days 1, 14, 21 or 30; no absolute brain/hemisphere weight difference at days 1–40
Study notes · methods, sources and limitations

Participants or model 44 pups from five treated dams; control offspring n=16 from three intact dams and n=14 from two saline-treated dams. Day-1 and day-40 tissue groups n=36 and n=38 overall.

Design Pregnant rats received two Epitalon injections on gestation days 18 and 20; pooled intact/saline offspring controls. Histology at postnatal days 1 and 40, elevated-plus-maze behavior at day 30. No hypoxic injury was induced.

Important limitations

  • Small maternal sample: five treated dams, three intact and two saline dams. Pup counts include offspring from the same litter.
  • Small maternal sample: five treated dams, three intact and two saline dams. Pup counts include offspring from the same litter. Random allocation, masking, sex-stratified analysis and litter-adjusted statistics are not established. Numerical behavioral scores are absent. Reduced growth and increased anxiety-related behavior prevent describing these results as uniformly neuroprotective or as pregnancy-safety evidence.

Far Eastern Medical Journal / Dalnevostochnyi meditsinskii zhurnal. 2007;(2):131–132 · Original journal publication

Original source or citation ↗

Source for the reported results ↗

Study results and tables ↗
01 / OVERVIEW

What is Epitalon (Epithalon)?

Names in this research collection

AEDG · Epithalon

A synthetic four-amino-acid peptide, also called AEDG, developed from pineal-gland peptide research. It is distinct from the tissue extract Epithalamin.

Identity / background source ↗

Research background

Synthetic AEDG has direct human hormone and retinal findings. Long-term Epithalamin mortality studies concern the extract and are kept separate.

RESEARCH GUIDE / UPDATED 7 NOVEMBER 2026

Epitalon (Epithalon): what the evidence shows

Epitalon, also spelled Epithalon, is the synthetic AEDG tetrapeptide. Human hormone studies and cell-level telomere findings are relevant research leads, but they do not establish human lifespan extension.

Curated by Molekul / @PepMariner. This guide summarizes linked source records; it is not an independent clinical review. Each source states what was inspected.

Telomeres: cells, with a published correction

The 2025 cell-line study reported telomere extension through telomerase-related changes in normal cells and alternative lengthening of telomeres in cancer cell lines. Figures 1–3 were corrected. These results do not demonstrate longer life in people or establish clinical cancer safety.

Questions about effects and safety ↓ · All linked studies and patents ↓

Pregnancy and offspring research

At day 40, exposed offspring weighed 73.6±2.6 g versus 83.4±4.9 g in pooled controls. Cortical measurements increased, while behavior at day 30 suggested less exploration and more anxiety. Larger brain measurements were not demonstrated benefits.

Small maternal sample: five treated dams, three intact and two saline dams. Pup counts include offspring from the same litter.

Reported findings and methods ↗ · Pregnancy research: full evidence review and archive ↗

More study findings

Comparison in people · 2009

Epitalon and Cortexin after acute systemic cold injury

Study of multiple preparations

Severe cold injury · day-five neuron-specific enolase
23.2 ng/mL combined vs 58.9 standard careCortexin alone 35.3; Epitalon alone 45.0 ng/mL. The source marks p<0.05 for Cortexin and the pair versus standard care.
Moderate cold injury · day-five neuron-specific enolase
11.3 ng/mL combined vs 15.1 standard careEpitalon 14.8 and Cortexin 14.4 ng/mL. Selected small subgroups.
Consciousness and immune markers
Faster recovery and altered immune measures describedOriginal allocation and longer-term functional outcomes remain unresolved.

In the severe-injury table, day-five neuron-specific enolase was 23.2 ng/mL with both agents and 58.9 ng/mL with standard care. No formal interaction analysis was reported.

Study notes · methods, sources and limitations

Participants or model Hospitalized cold-injury patients. Three adjunct arms had 25 patients each. The severity-specific outcome tables use smaller subgroups.

Design Standard care alone or with Epitalon, Cortexin or both. Serial neuron-specific enolase, immune measures and clinical observations.

Reported study exposure
The author abstract reports intramuscular Epitalon 10 µg and Cortexin 10 mg daily for ten days, separately or together depending on arm.

Important limitations

  • A historical treatment comparison with substantial concurrent care, small subgroup sizes and an imperfect source transcription.
  • This is a patient rehabilitation study. The biomarker changes do not establish cold tolerance in healthy people.

Candidate dissertation author abstract, Tables 1–3 · Candidate dissertation author abstract, Tables 1–3

Original source or citation ↗

Study results and tables ↗

Animal research · 2006

Age and baseline anxiety in Lysenko’s peptide stress models

Study of multiple preparations

High-anxiety young rats
Vilon and GVS-111 were highlighted in the author’s conclusionsOriginal group-level numerical estimates and doses still need retrieval.
Stress-response direction
Favorable and unfavorable responses describedThe author discusses this for GVS-111 and an experimental preparation called NKT. NKT identity remains unresolved.

The author reported that the direction of peptide-associated changes depended on age and baseline anxiety. Some shifts were unfavorable.

Study notes · methods, sources and limitations

Participants or model Rats grouped by age and baseline anxiety; series-specific denominators remain unverified.

Design Hypokinesia, hypoxia and exertion models, with behavioral, immune and oxidative endpoints. Twenty-four-hour hypokinesia was one stress protocol.

Important limitations

  • Potential overlap with narrower author-network dissertations, including Morgul and Rudenko. Outcomes cannot be pooled or assigned to humans.
  • A mechanistic program on stress response. The dissertation-level conclusion does not isolate all preparation-specific effects.

Doctoral dissertation, 244 pp., introduction and conclusions · Doctoral dissertation, 244 pp., introduction and conclusions

Original source or citation ↗

Study results and tables ↗

Animal research · 2008

Epitalon in the separate adult-hypoxia arm

Study of multiple preparations

Respiration arrest
150 ± 38 secondsSaline 72 ± 10 seconds; n=10/groupp<0.08; not a demonstrated p<0.05 difference
Adult mortality
20%Saline 10%; very small groups, no verified mortality difference test

In adult male rats, Epitalon was associated with 150 ± 38 seconds to respiration arrest versus 72±10 with saline. This arm did not expose pregnant animals to Epitalon.

Study notes · methods, sources and limitations

Participants or model Pregnant rats exposed to hypoxia on gestation day 10; separate adult-male experiment, n=10/group; offspring open-field strata n=6, 11, 9 and 12

Design Two distinct experiments: five-day pretreatment in adult males, and maternal Pinealon after gestation-day-10 hypoxia. Offspring cerebellar cells tested at day 12; open-field behavior at four weeks, stratified by maternal hypoxia sensitivity.

Important limitations

  • Only Pinealon was studied in the maternal arm of this publication. Adult hypoxia findings are adjacent context, not pregnancy-safety evidence.
  • Animal injury experiments do not establish human pregnancy safety. Epitalon, Vilon and Vesugen were tested only in the adult-male arm of this paper. Number of pregnant dams, randomization, masking and litter-adjusted statistics are not established. Offspring are not independent maternal exposures. Table 1 mortality conflicts with the prose; do not convert the latter into a verified excess risk. Vilon and Epitalon respiration findings marked p<0.08 are not demonstrated p<0.05 results. The paper prints an Epitalon sequence ending in Arg; established Epitalon identity is Ala-Glu-Asp-Gly. That apparent source error is retained as an identity warning.

Doklady Biological Sciences. 2008;418:7–10; Russian original Doklady Akademii Nauk 418(3):419–422. PMID 21249538 · Original journal publication

Original source or citation ↗

Source for the reported results ↗

Study results and tables ↗

Animal research · 2012

Melatonin and pineal gland peptides are able to correct the impairment of reproductive cycles in rats

Study of multiple preparations

Epithalamin
Recovery of norepinephrine diurnal dynamics in medial preoptic areaNorepinephrine decreased between 09:30 and 11:00 circadian time
Epitalon
Dopamine remained low at 05:00 and increased by 11:00 circadian timeMedian eminence/arcuate region; no numerical concentrations supplied
Pregnancy and fertility outcomes
No pregnant cohort, congenital-anomaly rate or verified live-birth benefit in the abstract

Epithalamin reportedly restored hypothalamic norepinephrine rhythms, while Epitalon had a stronger dopamine-rhythm effect in another hypothalamic region. The experiment used 1,2-dimethylhydrazine, not a pregnancy model or a methionine-only intervention.

Study notes · methods, sources and limitations

Participants or model Nonpregnant female rats in a xenobiotic-induced reproductive-aging model; n absent from abstract

Design Single 1,2-dimethylhydrazine exposure in female rats; region- and circadian-time-specific catecholamine measurements after melatonin or pineal-peptide interventions.

Important limitations

  • Reproductive-cycle neurochemistry is not pregnancy-safety evidence or proof of improved human fertility.
  • Reproductive-cycle neurochemistry is not pregnancy-safety evidence or proof of improved human fertility. Epitalon is a defined tetrapeptide; Epithalamin is a bovine pineal peptide extract. Their findings are not interchangeable. Doses, n, allocation, quantitative effect sizes and adverse-event surveillance unavailable in the abstract.

Current aging science. 2012;5(3):178-85. PMID 23237594 · Original journal publication

Original source or citation ↗

Study results and tables ↗

Lab research · 2003

Epitalon did not change melatonin release from perifused rat pineal glands

Basal melatonin secretion
No statistically significant effect in either age group
Isoproterenol-stimulated secretion
No change with AEDG reported

AEDG at 1–100 µM did not significantly change melatonin secretion in either age group. It also did not change the response to isoproterenol.

Study notes · methods, sources and limitations

Participants or model Pineal glands from 9-week-old and 27-month-old male Wistar rats.

Design Perifused glands from young and old male Wistar rats were exposed to AEDG at 1–100 µM. A separate condition tested melatonin secretion stimulated by isoproterenol.

Important limitations

  • The abstract does not provide sample sizes, numerical secretion values or confidence intervals. This ex vivo preparation differs from dissociated pinealocyte culture and human circadian measurements.

Journal of Endocrinological Investigation. 2003;26(3):211–215. PMID 12809170. · Indexed abstract

Original source or citation ↗

Study results and tables ↗

Lab research · 2012

Epitalon and Vilon in rat pinealocyte culture

Study of multiple preparations

Epitalon and melatonin
Higher melatonin in culture medium reported
AANAT and phosphorylated CREB
Increases with Epitalon; stronger expression with norepinephrine plus peptides

The abstract reports increased AANAT and phosphorylated CREB and higher culture-medium melatonin with Epitalon. It describes stronger marker expression when norepinephrine was added with the peptides.

Study notes · methods, sources and limitations

Participants or model Cultured rat pinealocytes.

Design Rat pinealocytes were exposed to Epitalon or Vilon, with norepinephrine in additional conditions. The study assessed AANAT, phosphorylated CREB and melatonin in culture medium.

Important limitations

  • The abstract does not give arm-level magnitudes, sample sizes or concentrations. It attributes the standalone melatonin increase to Epitalon. A culture response cannot establish improved sleep in people.

Bulletin of Experimental Biology and Medicine. 2012;153(2):255–258. PMID 22816096. · Indexed abstract

Original source or citation ↗

Study results and tables ↗

Study involving people · 2020

Human circadian study: urinary melatonin metabolite increased 1.7-fold

Urinary 6-sulfatoxymelatonin
1.7-fold increaseComparator not specified in the abstract
Clock / Csnk1e expression
1.9–2.1-fold normalization of overexpression
Cry2 expression
2-fold increase

The human study reports a 1.7-fold increase in urinary 6-sulfatoxymelatonin, 1.9–2.1-fold normalization of Clock/Csnk1e overexpression and a twofold increase in Cry2 expression.

Study notes · methods, sources and limitations

Participants or model Middle-aged people with reduced melatonin-producing function; no cohort size given in the indexed abstract.

Important limitations

  • The abstract does not specify the comparator for the urinary 1.7-fold figure or provide absolute concentrations. The English translation (10.1134/S2079057021010380) is the same publication, not another trial. The related 2021 World Heart Journal report is grouped because cohort overlap is unresolved.

Adv Gerontol. 33(3):429–435; English translation: Advances in Gerontology 11:53–58 (2021) · Indexed abstract

Original source or citation ↗

Study results and tables ↗

Lab research · 2003

Effect of new peptide bioregulators livagen and epitalon on enkephalin-degrading enzymes in human serum

Study of multiple preparations

Enkephalinase inhibition, IC50
Livagen 20 µM; Epitalon 500 µMConcentrations producing 50% inhibition in the serum assay
Opioid-receptor binding
No interaction detected at tested µ- or δ-receptorsRat-brain membrane assay

Livagen and Epitalon inhibited enkephalin breakdown in human serum, with IC50 values of 20 and 500 µM respectively. Neither bound the tested µ- or δ-opioid receptors.

Study notes · methods, sources and limitations

Participants or model Human-serum enzyme assay and rat-brain membrane receptor-binding assay.

Design Human-serum enzyme assay and rat-brain membrane receptor-binding assay.

Important limitations

  • These are laboratory concentrations and enzyme endpoints, not evidence of opioid-like clinical effects or an effective human dose.

Izvestiia Akademii nauk. Seriia biologicheskaia 2003 · Journal publication

Original source or citation ↗

Study results and tables ↗

Lab research · 2001

Rhythm of protein synthesis in cultures of hepatocytes from rats of different ages. Norm and effect of the peptide livagen

Study of multiple preparations

Protein synthesis
Increased with Livagen; unchanged with EpitalonCultured rat hepatocytes

Livagen increased protein synthesis in cultured rat liver cells, most strongly in cells from old animals. Epitalon did not change protein-synthesis intensity in this experiment.

Study notes · methods, sources and limitations

Participants or model Cultured hepatocytes from rats aged 1–24 months.

Design Cultured hepatocytes from rats aged 1–24 months.

Age range
1–24 months

Important limitations

  • The animals supplied cells; this was not a treatment trial in living rats or people.

Izvestiia Akademii nauk. Seriia biologicheskaia 2001 · Journal publication

Original source or citation ↗

Study results and tables ↗

Lab research · 2004

Effects of short peptides on lymphocyte chromatin in senile subjects

Study of multiple preparations

Chromatin readouts
Ribosomal-gene activation and decondensation reported; no numerical treatment effect supplied

Five short peptides increased ribosomal-gene activity and altered condensed chromatin in sampled leukocytes. Epitalon, Livagen and Prostamax changed chromosome-1 pericentromeric chromatin; Epitalon and Livagen also changed chromosome 9.

Study notes · methods, sources and limitations

Participants or model Leukocytes sampled from people aged 75–88 years and exposed to peptides in culture.

Design Leukocytes sampled from people aged 75–88 years and exposed to peptides in culture.

Donor ages
75–88 years

Important limitations

  • People donated cells; they were not treated in a clinical trial. Chromatin changes do not establish rejuvenation or longer life. Related chromatin-program publications may overlap.

Bulletin of experimental biology and medicine 2004 · Journal publication

Original source or citation ↗

Study results and tables ↗

Lab research · 2022

Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell Line

Study of multiple preparations

Inflammatory response
Reduced LPS-stimulated TNF/IL-6 in differentiated cells; reduced monocyte adhesion
Chonluten cell response
Reduced monocyte TNF; an apoptotic fraction also observed

Five preparations reduced LPS-induced TNF and IL-6 expression in differentiated THP-1 cells and reduced adhesion to activated endothelial cells. Chonluten also reduced monocyte TNF release; the full text notes an apoptotic cell fraction with Chonluten.

Study notes · methods, sources and limitations

Participants or model THP-1 leukemia-derived monocytes, differentiated macrophages and an activated HUVEC endothelial adhesion model.

Design THP-1 leukemia-derived monocytes, differentiated macrophages and an activated HUVEC endothelial adhesion model.

Test concentration
100 ng/mL per preparation; LPS 100 ng/mL in monocyte/macrophage experiments

Important limitations

  • A cell-line experiment, with peptides tested individually. No patient treatment or clinical anti-inflammatory effect was measured. Numerical cytokine reductions are shown graphically rather than supplied as exact data tables.

International journal of molecular sciences 2022 · Journal publication

Original source or citation ↗

Study results and tables ↗

Review of earlier studies · 2026

Epitalon and Epithalamin: A Narrative Review of Mechanistic, Preclinical, and Clinical Evidence.

Study of multiple preparations

This 2026 review separates synthetic Epitalon from the pineal extract Epithalamin. It brings together work on telomeres, circadian rhythms and cellular aging, while finding that clinical benefit and long-term safety still need stronger human studies.

Study notes · methods, sources and limitations

Participants or model Narrative review of experimental and human literature through 22 September 2026

Important limitations

  • Narrative synthesis, not a new experiment or a pooled estimate of treatment benefit. Epithalamin extract findings cannot be assigned directly to synthetic Epitalon.

International journal of molecular sciences · Indexed abstract

Original source or citation ↗

Study results and tables ↗

Animal research · 2026

LCP2 mediates SUV39H1-driven cellular senescence-related chemoresistance in natural killer/T-cell lymphoma.

The authors report that targeting a senescence-related pathway with Epitalon and Chaetocin partly removed therapy-induced senescent cells and improved chemotherapy response in experimental models. Patient plasma was used for biomarker analysis, not to test Epitalon treatment.

Study notes · methods, sources and limitations

Participants or model Drug-resistant lymphoma cell models, patient plasma biomarker analysis and an in-vivo experimental model

Important limitations

  • The abstract discusses Epitalon and Chaetocin together; it does not establish an isolated Epitalon effect or support self-treatment of cancer. Animal and laboratory findings do not establish benefit in people. Abstract only. Full methods, sample-size details and adverse-event tables were outside the review.

Cell death & disease · Indexed abstract

Original source or citation ↗

Study results and tables ↗

Experiment described in a patent · 2023

Pharmaceutical single dosage form for oral delivery of peptides — EP4226918A1

GHK-Cu at 60 minutes
350 pg/mL inventive formulation versus 320 and 150 pg/mL comparatorsFormulation examples; not a clinical skin or wound outcome60 minutes
Epithalon at 60 minutes
360 pg/mL inventive formulation versus 310 and 50 pg/mL comparatorsIndividual patent pharmacokinetic example60 minutes

A capsule-in-capsule Epitalon formulation produced higher reported plasma concentrations than two comparison capsules. At 120 minutes, Table 4 reports 18,600 pg/mL versus 3,000 and 1,000 pg/mL.

Study notes · methods, sources and limitations

Participants or model Patent describes oral administration to a patient; group size and allocation are not adequately described

Design Oral peptide-delivery patent examples described as administration to a patient; sample size, repeatability and assay validation are not established.

Important limitations

  • Patent-reported measurements, not a peer-reviewed clinical trial or an absolute bioavailability estimate. Results concern a specific formulation; they cannot be transferred to ordinary capsules. Table 3 and Table 4 differ for the second comparator.
  • Plasma measurements alone do not establish absolute bioavailability, clinical benefit or oral equivalence. Assay specificity, replication and patient characteristics are incompletely reported.

European patent application EP4226918A1 · Patent report

Original source or citation ↗

Study results and tables ↗

Research updates ↗

Compound class
Bioregulator
Research collection
Peptide bioregulation · editorial grouping
Research institutions
No institutional affiliation recorded
Source review
Review dates and the material assessed are listed with each publication below.
02 / HOW TO READ THE RESEARCH

Understanding the evidence

Human research

Human melatonin, circadian-marker and retinal studies

Study methods

Small controlled comparisons; related circadian reports grouped

Independent replication

New citations are not automatically independent replication; shared programs and translated reports require cohort checks

Source access

New indexed primary abstracts and/or report reproductions linked; review depth shown per source

Safety evidence

Reported tolerability is not proof of safety; uncommon harms and long-term outcomes remain unresolved

Open a topic for the evidence assessment.

Questions about Epitalon (Epithalon)

What is Epitalon, and is Epithalon the same peptide?

Epitalon and Epithalon are spellings used for the synthetic tetrapeptide Ala–Glu–Asp–Gly (AEDG). Epithalamin is a pineal-derived mixture, while Pinealon is the different tripeptide EDR. Similar names do not establish equivalent effects.

Does Epitalon lengthen telomeres?

Telomere lengthening has been reported in cell experiments. The 2025 paper describes different telomere-maintenance responses in normal and cancer cell lines and has an accompanying correction to Figures 1–3. A cultured-cell finding does not establish a useful treatment effect or longevity benefit in humans.

Are there human studies proving Epitalon extends lifespan?

The direct synthetic-Epitalon studies linked here do not establish human lifespan extension. There are human melatonin, circadian-marker and retinal reports, but these outcomes are different from survival. Long-term findings for the Epithalamin extract cannot be transferred to AEDG.

Does Epitalon improve sleep?

Small human studies report changes in melatonin or circadian-related markers. The 2007 low-melatonin subgroup had a higher nighttime melatonin concentration after treatment, while participants with preserved function showed no change. These measurements do not by themselves demonstrate better sleep, more REM sleep or an insomnia treatment effect.

What is known about Epitalon side effects and cancer safety?

The collection does not establish long-term clinical safety. Telomere findings in cancer cell lines are mechanistic observations; they prove neither that Epitalon causes cancer in people nor that it is safe in people with cancer. Laboratory and short clinical reports cannot settle that question.

What is known about Epitalon during pregnancy?

A small 2007 rat study gave Epitalon to five dams late in gestation. Exposed offspring had larger selected brain measurements, lower weight at day 40 and more anxiety-related behavior at day 30. These mixed developmental findings do not establish safety or benefit in human pregnancy. Epithalamin cycle-regulation research is a different preparation and model.

Compare related preparations: Pinealon research ↗ · Epithalamin research ↗

Evidence standards and review limits · Send a source correction

More findings, background and history

What remains unclear

The retinal report gives different counts for eyes and patients. The 2020 and 2021 circadian reports may share participants. Their hormone and gene measurements leave effects on sleep and lifespan unresolved.

Human reports are linked; their presence does not establish effectiveness. Several publications can describe the same participants.

Browse original study records ↗
PEPTIDE RESEARCH / OCT 2026

Related preparations and evidence

Evidence belongs to the preparation actually studied. A tissue extract and a synthetic peptide can belong to the same research tradition without having equivalent effects or safety.

Pineal gland: the molecular link

Epithalamin → Epitalon / AEDG

The 2017 analytical study detected AEDG in pineal polypeptide complex, after its earlier design from amino-acid composition.

Clinical evidence and limitations

Epithalamin aging cohorts and Pineamin menopause/reproductive studies concern distinct extracts. Pineamin now has separately indexed sleep, semen and ovarian-reserve reports.

Extract findings do not establish equivalent benefits for synthetic AEDG. Check cohort overlap, methods and independent replication before interpreting longevity claims.

Related preparations

Some references concern related extracts, reviews or molecular identification rather than direct studies of this compound.

Explore the full bioregulator collection ↗

View this preparation in the Khavinson evidence map ↗

PATENT RESEARCH / COLLECTION UPDATED 7 NOVEMBER 2026

Patents and claimed inventions

These 4 grouped records distinguish claimed molecules, uses, formulations and related chemistry. Patent disclosure does not establish clinical benefit or approval.

2026 · EP4758157A1 · 2026 European publication: modified GHK, Epitalon, Semax, Selank and Cortagen analoguesModified analogue · Reported cell-number multiples versus control: GHK 260-fold, GHK-Cu 320-fold, Ac-GHK-Arg-NH2 360-fold

Reported findings

The disclosure reports cell-growth, telomerase-related and stability findings for chemically modified peptides, with several ambiguities in reporting.

GHK-related long-term keratinocyte assay
Reported cell-number multiples versus control: GHK 260-fold, GHK-Cu 320-fold, Ac-GHK-Arg-NH2 360-foldAs stated in the patent; assay normalization and duration are insufficiently clear for clinical interpretation
Epithalon-related laboratory summary
41.2% for modified peptide versus 33.3% for parentThe text combines telomerase activity and telomere elongation rather than clearly separating the endpoints
All reported results, comparisons and limitations →

Modified analogue. The family claims chemically modified peptides, including acetylated parent sequences extended with C-terminal arginine amide; it also has a 2025 WO publication.

Ac-GHK-Arg-NH2 and the corresponding modified AEDG, Semax, Selank and Cortagen constructs are different molecules from their parents. The EP and WO publications are one family, not independent studies.

Publication
EP4758157A1 ↗ · 2026-06-17
Earliest priority / filing
2023-08-13 / 2023-08-13
Original applicant / assignee
Individual
Indexed status
Pending · checked 2026-11-06
Patent family
88092996 · family publications are related filings, not independent studies.
Original title, inventors and related publications

New peptides and use thereof

Inventors: Filip Majewski.

EP4758157A1 · WO2025037992A1

Read source review →

2026 · EP4757825A1 · Peptide oral-delivery application: capsule within capsuleFormulation · 430 pg/mL versus 360 and 310 pg/mL

Reported findings

The nested-capsule formulation produced higher measured plasma concentrations than two comparator preparations.

Epithalon plasma concentration
430 pg/mL versus 360 and 310 pg/mL60 minutesExample 50 versus nested-capsule and mixed-capsule comparators
Epithalon plasma concentration
22,300 pg/mL versus 18,600 and 3,000 pg/mL120 minutesExample 50 versus CE-3 and mixed-capsule comparator
All reported results, comparisons and limitations →

Formulation. This 2026 European publication belongs to the same family as WO2025037993A1 and describes oral peptide-delivery compositions.

Formulation claims and examples do not establish oral bioavailability or clinical equivalence for every listed peptide; this is separate from the older EP4226918 family.

Publication
EP4757825A1 ↗ · 2026-06-17
Earliest priority / filing
2023-08-13 / 2023-08-13
Original applicant / assignee
Individual
Indexed status
Pending · checked 2026-11-06
Patent family
88092942 · family publications are related filings, not independent studies.
Original title, inventors and related publications

Dosage form for peptide agents

Inventors: Filip Majewski.

EP4757825A1 · WO2025037993A1

Read source review →

2023 · EP4226918A1 · Pharmaceutical single dosage form for oral delivery of peptides — EP4226918A1Formulation · 350 pg/mL inventive formulation versus 320 and 150 pg/mL comparators

Reported findings

The disclosure reports higher plasma peptide concentrations for nested-capsule formulations than selected comparators.

GHK-Cu at 60 minutes
350 pg/mL inventive formulation versus 320 and 150 pg/mL comparators60 minutesFormulation examples; not a clinical skin or wound outcome
Epithalon at 60 minutes
360 pg/mL inventive formulation versus 310 and 50 pg/mL comparators60 minutesIndividual patent pharmacokinetic example
All reported results, comparisons and limitations →

Formulation. Oral peptide-delivery composition, including Epitalon; listed peptide ingredients are not a demonstration of oral clinical efficacy.

A patent disclosure is not clinical proof, marketing approval or a legal opinion. Related publications and patent family members may describe the same experiments.

Publication
EP4226918A1 ↗ · 2023-08-16
Earliest priority / filing
2022-02-15 / 2022-02-15
Original applicant / assignee
Individual
Indexed status
Pending · checked 2026-11-06
Patent family
80682691 · family publications are related filings, not independent studies.
Original title, inventors and related publications

Pharmaceutical single dosage form for oral delivery of peptides

Inventors: Filip Majewski.

EP4226918A1

Original patent PDF ↗

Read source review →

2004 · US6727227B1 · Epitalon: AEDG molecular patentMolecule · 48 ± 1.5 days treated versus 38 ± 1.6 control

Reported findings

Epitalon results vary by species, sex, strain and endpoint; the patent does not demonstrate longer human life.

HEM female flies: average lifespan
48 ± 1.5 days treated versus 38 ± 1.6 controlA fly experiment, not human survival
LA female flies: average versus maximum lifespan
Average 20 ± 1.3 versus 22 ± 1.0 days; maximum 44 ± 1.9 versus 36 ± 1.9 days Maximum lifespan improved while average lifespan did not; separate endpoints
All reported results, comparisons and limitations →

Molecule. The patent claims the defined tetrapeptide Ala-Glu-Asp-Gly, related compositions and proposed uses.

The synthetic peptide differs from Epithalamin extract. Patent geroprotection claims do not demonstrate extension of human lifespan.

Publication
US6727227B1 ↗ · 2004-04-27
Earliest priority / filing
1999-05-11 / 2000-01-20
Original applicant / assignee
Nostiji "Klinika Instituta Bioregulyatsii Gerontologii" OOO
Indexed status
Expired - Fee Related · checked 2026-11-06
Patent family
20219149 · family publications are related filings, not independent studies.
Original title, inventors and related publications

Tetrapetide revealing geroprotective effect, pharmacological substance on its basis, and the method of its application

Inventors: Vladimir K. Khavinson.

US6727227B1 · EP1179008B1 · JP3902406B2 · ATE321068T1 · AU769847C · CA2373128C · DE60026826T2 · ES2259998T3 · IL146432A0 · RU2157233C1 · WO2000068255A2

Original patent PDF ↗

Read source review →

Status is an indexed snapshot, not an official legal assessment. Search the patent collection and read the method →

03 / SOURCE RECORDS

Linked sources

Explore the research map and unresolved leads ↗

2009 · Epitalon and Cortexin after acute systemic cold injurySevere cold injury · day-five neuron-specific enolase: 23.2 ng/mL combined vs 58.9 standard care
2009Human comparative studyRussian source · see review scope

Epitalon and Cortexin after acute systemic cold injury

· Candidate dissertation author abstract, Tables 1–3

Format: Author’s abstract transcription. Full dissertation and underlying records unavailable. · Reviewed: Reported methods, results and evidence limitations

V. V. Kovalev · Candidate dissertation author abstract, Tables 1–3

In the severe-injury table, day-five neuron-specific enolase was 23.2 ng/mL with both agents and 58.9 ng/mL with standard care. No formal interaction analysis was reported.

Results and tables

Reported findings and study design

In the severe-injury table, day-five neuron-specific enolase was 23.2 ng/mL with both agents and 58.9 ng/mL with standard care. No formal interaction analysis was reported.

Standard care alone or with Epitalon, Cortexin or both. Serial neuron-specific enolase, immune measures and clinical observations.

Dose, route and schedule

The author abstract reports intramuscular Epitalon 10 µg and Cortexin 10 mg daily for ten days, separately or together depending on arm.

Protocol source ↗ · Author’s abstract transcription. Full dissertation and underlying records unavailable.

Results · Author’s abstract transcription. Full dissertation and underlying records unavailable.
MeasureResultComparison, timing and statistics
Severe cold injury · day-five neuron-specific enolase23.2 ng/mL combined vs 58.9 standard careCortexin alone 35.3; Epitalon alone 45.0 ng/mL. The source marks p<0.05 for Cortexin and the pair versus standard care.
Moderate cold injury · day-five neuron-specific enolase11.3 ng/mL combined vs 15.1 standard careEpitalon 14.8 and Cortexin 14.4 ng/mL. Selected small subgroups.
Consciousness and immune markersFaster recovery and altered immune measures describedOriginal allocation and longer-term functional outcomes remain unresolved.

This is a patient rehabilitation study. The biomarker changes do not establish cold tolerance in healthy people.

Source for these results ↗ · Reviewed 2026-11-09

Population / setting
Hospitalized cold-injury patients. Three adjunct arms had 25 patients each. The severity-specific outcome tables use smaller subgroups.
Source reviewed
Author’s abstract transcription. Full dissertation and underlying records unavailable.
Study limitations
  • A historical treatment comparison with substantial concurrent care, small subgroup sizes and an imperfect source transcription.

Reviewed 2026-11-09.

Read the source ↗
2006 · Age and baseline anxiety in Lysenko’s peptide stress modelsHigh-anxiety young rats: Vilon and GVS-111 were highlighted in the author’s conclusions
2006Animal / experimentalRussian source · see review scope

Age and baseline anxiety in Lysenko’s peptide stress models

· Doctoral dissertation, 244 pp., introduction and conclusions

Format: Author’s abstract transcription. Full dissertation and underlying records unavailable. · Reviewed: Reported methods, results and evidence limitations

A. V. Lysenko · Doctoral dissertation, 244 pp., introduction and conclusions

The author reported that the direction of peptide-associated changes depended on age and baseline anxiety. Some shifts were unfavorable.

Results and tables

Reported findings and study design

The author reported that the direction of peptide-associated changes depended on age and baseline anxiety. Some shifts were unfavorable.

Hypokinesia, hypoxia and exertion models, with behavioral, immune and oxidative endpoints. Twenty-four-hour hypokinesia was one stress protocol.

Results · Author’s abstract transcription. Full dissertation and underlying records unavailable.
MeasureResultComparison, timing and statistics
High-anxiety young ratsVilon and GVS-111 were highlighted in the author’s conclusionsOriginal group-level numerical estimates and doses still need retrieval.
Stress-response directionFavorable and unfavorable responses describedThe author discusses this for GVS-111 and an experimental preparation called NKT. NKT identity remains unresolved.

A mechanistic program on stress response. The dissertation-level conclusion does not isolate all preparation-specific effects.

Source for these results ↗ · Reviewed 2026-11-09

Population / setting
Rats grouped by age and baseline anxiety; series-specific denominators remain unverified.
Source reviewed
Author’s abstract transcription. Full dissertation and underlying records unavailable.
Study limitations
  • Potential overlap with narrower author-network dissertations, including Morgul and Rudenko. Outcomes cannot be pooled or assigned to humans.

Reviewed 2026-11-09.

Read the source ↗
2008 · Pinealon after maternal hypoxia: offspring and adult-rat findingsOffspring per dam: 14 ± 2 versus 9 ± 3
2008Animal / experimentalFull text available

Pinealon after maternal hypoxia: offspring and adult-rat findings

Pinealon in maternal arm; separate adult-male Vilon, Vesugen, Pinealon and Epitalon arms · Original journal publication

Format: Original PDF · Reviewed: Original four-page PDF; methods and Tables 1–2 visually verified, printed pp.7–9. Journal year 2008, despite later index date.

L. S. Kozina, A. V. Arutjunyan, S. L. Stvolinskii, M. S. Stepanova, M. G. Makletsova, V. Kh. Khavinson · Doklady Biological Sciences. 2008;418:7–10; Russian original Doklady Akademii Nauk 418(3):419–422. PMID 21249538

Pinealon-treated hypoxic dams had 14±2 offspring versus 9±3 with saline (p<0.05). Offspring activity and neuronal responses changed. Adult-rat Table 1 reports 10% mortality with both Pinealon and saline, conflicting with the narrative claim of higher Pinealon mortality.

Results and tables

Reported findings and study design

Reported findings

Pinealon-treated hypoxic dams had 14±2 offspring versus 9±3 with saline (p<0.05). Offspring activity and neuronal responses changed. Adult-rat Table 1 reports 10% mortality with both Pinealon and saline, conflicting with the narrative claim of higher Pinealon mortality.

Two distinct experiments: five-day pretreatment in adult males, and maternal Pinealon after gestation-day-10 hypoxia. Offspring cerebellar cells tested at day 12; open-field behavior at four weeks, stratified by maternal hypoxia sensitivity.

Dose, route and schedule

Maternal experiment: hypoxia on gestation day 10, then Pinealon 10 µg/kg intraperitoneally on five alternate days; saline comparator. Adult males: each peptide 10 µg/kg/day intraperitoneally for five days before hypoxia. These are distinct experimental schedules, not human-use instructions.

Protocol source ↗ · Original four-page PDF; methods and Tables 1–2 visually verified, printed pp.7–9. Journal year 2008, despite later index date.

Results · Original four-page PDF; methods and Tables 1–2 visually verified, printed pp.7–9. Journal year 2008, despite later index date.
MeasureResultComparison, timing and statistics
Offspring per dam14 ± 2 versus 9 ± 3Pinealon after maternal hypoxia versus saline · Birth · p<0.05; number of dams and meaning of ± not explicitly supplied
Horizontal activity, offspring of sensitive dams53 ± 5.1 versus 36 ± 6.9n=11 versus n=6 offspring · Four weeks · p<0.05
Adult-male respiration arrest184 ± 30 versus 72 ± 10 secondsPinealon versus saline; n=10/group · After five-day pretreatment · p<0.014
Adult mortality: table versus proseTable 1: saline 10%, Pinealon 10%, Vilon 20%, Vesugen 10%, Epitalon 20%Narrative says higher mortality with Pinealon; discrepancy unresolved
Oxidative readoutsLower cell death did not consistently correspond to lower ROSH₂O₂ and NMDA responses differed; exact figure bars not digitized
Adult-male arm: Table 1, n=10/group
Adult-male arm: Table 1, n=10/group
GroupTime to respiration arrest (s)Posture recovery (s)Restitution (s)Restitution coefficientMortality (%)
Saline72 ± 10126 ± 21202 ± 322.810
Vilon149 ± 47 (p<0.08)152 ± 31302 ± 50 (p<0.08)2.020
Vesugen88 ± 9111 ± 16194 ± 242.210
Pinealon184 ± 30 (p<0.014)152 ± 16291 ± 35 (p<0.1)1.610
Epitalon150 ± 38 (p<0.08)103 ± 28185 ± 331.220

Printed p-values compare saline. Unmarked cells have no numerical p-value supplied. Uncertainty type is not clearly defined. This is not a pregnancy-outcome table.

Offspring open-field Table 2: significant activity outcomes
Offspring open-field Table 2: significant activity outcomes
MeasureSensitive dams, saline offspring (n=6)Sensitive dams, Pinealon offspring (n=11)Resistant dams, saline offspring (n=9)Resistant dams, Pinealon offspring (n=12)
Horizontal activity36 ± 6.953 ± 5.145 ± 3.357 ± 3.3
Vertical activity2 ± 0.85 ± 0.82 ± 0.66 ± 1.1

Both Pinealon comparisons marked p<0.05 against the corresponding hypoxic untreated stratum. Increased activity is not itself evidence of better memory or normal development.

Animal injury experiments do not establish human pregnancy safety. Epitalon, Vilon and Vesugen were tested only in the adult-male arm of this paper. Number of pregnant dams, randomization, masking and litter-adjusted statistics are not established. Offspring are not independent maternal exposures. Table 1 mortality conflicts with the prose; do not convert the latter into a verified excess risk. Vilon and Epitalon respiration findings marked p<0.08 are not demonstrated p<0.05 results. The paper prints an Epitalon sequence ending in Arg; established Epitalon identity is Ala-Glu-Asp-Gly. That apparent source error is retained as an identity warning.

Source for these results ↗ · Reviewed 2026-11-08

Population / setting
Pregnant rats exposed to hypoxia on gestation day 10; separate adult-male experiment, n=10/group; offspring open-field strata n=6, 11, 9 and 12
Source reviewed
Original four-page PDF; methods and Tables 1–2 visually verified, printed pp.7–9. Journal year 2008, despite later index date.
Study limitations
  • Animal injury experiments do not establish human pregnancy safety. Epitalon, Vilon and Vesugen were tested only in the adult-male arm of this paper.
  • Number of pregnant dams, randomization, masking and litter-adjusted statistics are not established. Offspring are not independent maternal exposures.
  • Table 1 mortality conflicts with the prose; do not convert the latter into a verified excess risk. Vilon and Epitalon respiration findings marked p<0.08 are not demonstrated p<0.05 results.
  • The paper prints an Epitalon sequence ending in Arg; established Epitalon identity is Ala-Glu-Asp-Gly. That apparent source error is retained as an identity warning.

Reviewed 2026-11-08.

Read the source ↗
2007 · Epitalon in pregnant rats: altered brain development and behaviorOffspring body weight: 73.6 ± 2.6 g versus 83.4 ± 4.9 g
2007Animal / experimentalRussian source · see review scope

Epitalon in pregnant rats: altered brain development and behavior

Synthetic Epitalon (Ala-Glu-Asp-Gly), distinct from Epithalamin tissue extract · Original journal publication

Format: Original PDF · Reviewed: Original two-page scanned article; both pages visually inspected, including all methods and numerical results

B. Ya. Ryzhavskii, I. V. Nikolaeva · Far Eastern Medical Journal / Dalnevostochnyi meditsinskii zhurnal. 2007;(2):131–132

At day 40, exposed offspring weighed 73.6±2.6 g versus 83.4±4.9 g in pooled controls. Cortical measurements increased, while behavior at day 30 suggested less exploration and more anxiety. Larger brain measurements were not demonstrated benefits.

Results and tables

Reported findings and study design

Reported findings

At day 40, exposed offspring weighed 73.6±2.6 g versus 83.4±4.9 g in pooled controls. Cortical measurements increased, while behavior at day 30 suggested less exploration and more anxiety. Larger brain measurements were not demonstrated benefits.

Pregnant rats received two Epitalon injections on gestation days 18 and 20; pooled intact/saline offspring controls. Histology at postnatal days 1 and 40, elevated-plus-maze behavior at day 30. No hypoxic injury was induced.

Dose, route and schedule

Epitalon 10 µg per pregnant dam intramuscularly on gestation days 18 and 20, 0.1 mL solution. This is per animal, not per kilogram. Intact and equal-volume saline offspring controls pooled after no detected difference. Histomorphometry and nucleic-acid microphotometry; elevated plus maze. Historical experiment, not human-use instructions.

Protocol source ↗ · Original two-page scanned article; both pages visually inspected, including all methods and numerical results

Results · Original two-page scanned article; both pages visually inspected, including all methods and numerical results
MeasureResultComparison, timing and statistics
Offspring body weight73.6 ± 2.6 g versus 83.4 ± 4.9 gEpitalon-exposed versus pooled control offspring · Day 40 · Narrative describes significantly reduced growth; exact p-value/uncertainty type not specified
Parietal cortex thickness1528 ± 34 versus 1350 ± 36 µmExposed versus pooled controls · Day 40 · Described as significant; exact p-value absent
Layer I thickness / layer II neuron count137 ± 2 versus 129 ± 2 µm; 21.3 ± 0.8 versus 16.9 ± 0.5 cells per standard fieldMeasurements are structural differences, not proof of improved function · Day 40
Behavioral directionLess exploration and open-arm activity; more time in closed arms, grooming and sniffingAuthors interpret reduced exploratory activity and increased anxiety · Day 30
Neutral findingsNo significant body-weight differences at days 1, 14, 21 or 30; no absolute brain/hemisphere weight difference at days 1–40

Small maternal sample: five treated dams, three intact and two saline dams. Pup counts include offspring from the same litter. Random allocation, masking, sex-stratified analysis and litter-adjusted statistics are not established. Numerical behavioral scores are absent. Reduced growth and increased anxiety-related behavior prevent describing these results as uniformly neuroprotective or as pregnancy-safety evidence.

Source for these results ↗ · Reviewed 2026-11-08

Population / setting
44 pups from five treated dams; control offspring n=16 from three intact dams and n=14 from two saline-treated dams. Day-1 and day-40 tissue groups n=36 and n=38 overall.
Source reviewed
Original two-page scanned article; both pages visually inspected, including all methods and numerical results
Study limitations
  • Small maternal sample: five treated dams, three intact and two saline dams. Pup counts include offspring from the same litter.
  • Random allocation, masking, sex-stratified analysis and litter-adjusted statistics are not established. Numerical behavioral scores are absent.
  • Reduced growth and increased anxiety-related behavior prevent describing these results as uniformly neuroprotective or as pregnancy-safety evidence.

Reviewed 2026-11-08.

Read the source ↗
2012 · Melatonin and pineal gland peptides are able to correct the impairment of reproductive cycles in ratsEpithalamin: Recovery of norepinephrine diurnal dynamics in medial preoptic area
2012Animal / experimentalEnglish abstract

Melatonin and pineal gland peptides are able to correct the impairment of reproductive cycles in rats

Epitalon (Ala-Glu-Asp-Gly), Epithalamin pineal extract and melatonin in separate comparisons · Original journal publication

Format: Publication record and available text · Reviewed: Indexed original abstract; full methods and outcome tables not recovered

Arutjunyan A, Kozina L, Milyutina Y, Korenevsky A, Stepanov M, Arutyunov V · Current aging science. 2012;5(3):178-85. PMID 23237594

Epithalamin reportedly restored hypothalamic norepinephrine rhythms, while Epitalon had a stronger dopamine-rhythm effect in another hypothalamic region. The experiment used 1,2-dimethylhydrazine, not a pregnancy model or a methionine-only intervention.

Results and tables

Reported findings and study design

Narrative findings; numerical extraction incomplete

Epithalamin reportedly restored hypothalamic norepinephrine rhythms, while Epitalon had a stronger dopamine-rhythm effect in another hypothalamic region. The experiment used 1,2-dimethylhydrazine, not a pregnancy model or a methionine-only intervention.

Single 1,2-dimethylhydrazine exposure in female rats; region- and circadian-time-specific catecholamine measurements after melatonin or pineal-peptide interventions.

Results · Indexed original abstract; full methods and outcome tables not recovered
MeasureResultComparison, timing and statistics
EpithalaminRecovery of norepinephrine diurnal dynamics in medial preoptic areaNorepinephrine decreased between 09:30 and 11:00 circadian time
EpitalonDopamine remained low at 05:00 and increased by 11:00 circadian timeMedian eminence/arcuate region; no numerical concentrations supplied
Pregnancy and fertility outcomesNo pregnant cohort, congenital-anomaly rate or verified live-birth benefit in the abstract

Reproductive-cycle neurochemistry is not pregnancy-safety evidence or proof of improved human fertility. Epitalon is a defined tetrapeptide; Epithalamin is a bovine pineal peptide extract. Their findings are not interchangeable. Doses, n, allocation, quantitative effect sizes and adverse-event surveillance unavailable in the abstract.

Source for these results ↗ · Reviewed 2026-11-08

Population / setting
Nonpregnant female rats in a xenobiotic-induced reproductive-aging model; n absent from abstract
Source reviewed
Indexed original abstract; full methods and outcome tables not recovered
Study limitations
  • Reproductive-cycle neurochemistry is not pregnancy-safety evidence or proof of improved human fertility.
  • Epitalon is a defined tetrapeptide; Epithalamin is a bovine pineal peptide extract. Their findings are not interchangeable.
  • Doses, n, allocation, quantitative effect sizes and adverse-event surveillance unavailable in the abstract.

Reviewed 2026-11-08.

Read the source ↗
2003 · Epitalon did not change melatonin release from perifused rat pineal glandsBasal melatonin secretion: No statistically significant effect in either age group
2003In vitroEnglish abstract

Epitalon did not change melatonin release from perifused rat pineal glands

Y. Djeridane, V. Kh. Khavinson, V. N. Anisimov, Y. Touitou · Journal of Endocrinological Investigation. 2003;26(3):211–215. PMID 12809170.

AEDG at 1–100 µM did not significantly change melatonin secretion in either age group. It also did not change the response to isoproterenol.

Results and tables

Reported findings and study design

Narrative findings; numerical extraction incomplete

Perifused glands from young and old male Wistar rats were exposed to AEDG at 1–100 µM. A separate condition tested melatonin secretion stimulated by isoproterenol.

Results · Original indexed abstract
MeasureResultComparison, timing and statistics
Basal melatonin secretionNo statistically significant effect in either age group
Isoproterenol-stimulated secretionNo change with AEDG reported

Source for these results ↗ · Reviewed 2026-11-11

Population / setting
Pineal glands from 9-week-old and 27-month-old male Wistar rats.
Source reviewed
Original indexed abstract checked.
Study limitations
  • The abstract does not provide sample sizes, numerical secretion values or confidence intervals.
  • This ex vivo preparation differs from dissociated pinealocyte culture and human circadian measurements.

Reviewed 2026-11-11.

Read the source ↗
2012 · Epitalon and Vilon in rat pinealocyte cultureEpitalon and melatonin: Higher melatonin in culture medium reported
2012In vitroEnglish abstract

Epitalon and Vilon in rat pinealocyte culture

V. Kh. Khavinson, N. S. Linkova, I. M. Kvetnoy, T. V. Kvetnaia, V. O. Polyakova, H.-W. Korf · Bulletin of Experimental Biology and Medicine. 2012;153(2):255–258. PMID 22816096.

The abstract reports increased AANAT and phosphorylated CREB and higher culture-medium melatonin with Epitalon. It describes stronger marker expression when norepinephrine was added with the peptides.

Results and tables

Reported findings and study design

Narrative findings; numerical extraction incomplete

Rat pinealocytes were exposed to Epitalon or Vilon, with norepinephrine in additional conditions. The study assessed AANAT, phosphorylated CREB and melatonin in culture medium.

Results · Original indexed abstract
MeasureResultComparison, timing and statistics
Epitalon and melatoninHigher melatonin in culture medium reported
AANAT and phosphorylated CREBIncreases with Epitalon; stronger expression with norepinephrine plus peptides

Source for these results ↗ · Reviewed 2026-11-11

Population / setting
Cultured rat pinealocytes.
Source reviewed
Original indexed abstract checked.
Study limitations
  • The abstract does not give arm-level magnitudes, sample sizes or concentrations. It attributes the standalone melatonin increase to Epitalon.
  • A culture response cannot establish improved sleep in people.

Reviewed 2026-11-11.

Read the source ↗
2026 · 2026 European publication: modified GHK, Epitalon, Semax, Selank and Cortagen analogues — EP4758157A1GHK-related long-term keratinocyte assay: Reported cell-number multiples versus control: GHK 260-fold, GHK-Cu 320-fold, Ac-GHK-Arg-NH2 360-fold
2026Patent / reported experimentsFull text available

2026 European publication: modified GHK, Epitalon, Semax, Selank and Cortagen analogues — EP4758157A1

Patent-defined substance or composition · Patent publication

Format: Original patent text and indexed metadata · Reviewed: Claims, selected reported findings and limitations reviewed; supporting experiments not comprehensively appraised.

Filip Majewski · EP4758157A1 · patent family 88092996

The disclosure reports cell-growth, telomerase-related and stability findings for chemically modified peptides, with several ambiguities in reporting.

Results and tables

Reported patent results

Reported findings

The disclosure reports cell-growth, telomerase-related and stability findings for chemically modified peptides, with several ambiguities in reporting.

Patent laboratory comparisons of modified versus parent peptides; no verified human treatment cohort.

Results · Experimental Examples 2.2–2.6 and Example 3; cell, telomerase and stability narratives.
MeasureResultComparison, timing and statistics
GHK-related long-term keratinocyte assayReported cell-number multiples versus control: GHK 260-fold, GHK-Cu 320-fold, Ac-GHK-Arg-NH2 360-foldAs stated in the patent; assay normalization and duration are insufficiently clear for clinical interpretation
Epithalon-related laboratory summary41.2% for modified peptide versus 33.3% for parentThe text combines telomerase activity and telomere elongation rather than clearly separating the endpoints
Cortagen-related Ki-67Approximately threefold expression-area increase for modified peptide versus more than twofold for parent at different stated concentrationsDifferent tested exposures prevent a simple potency ratio
Storage and chemical stabilityModified compounds described as more stable in comparison assaysIndividual stability-table values not transcribed; no human half-life established

In-vitro findings, unclear units and very large proliferation claims require independent verification. Modified analogues are not the parent peptides, and no human regeneration or longevity effect follows.

Source for these results ↗ · Reviewed 2026-11-06

Population / setting
Patent laboratory comparisons of modified versus parent peptides; no verified human treatment cohort.
Source reviewed
Original patent publication accessed through Google Patents. Claims, selected reported findings and source limitations checked. The results section identifies the examples, tables and any numerical extraction gaps. No complete experimental audit, prosecution review or legal claim construction was performed.
Study limitations
  • Ac-GHK-Arg-NH2 and the corresponding modified AEDG, Semax, Selank and Cortagen constructs are different molecules from their parents. The EP and WO publications are one family, not independent studies.
  • In-vitro findings, unclear units and very large proliferation claims require independent verification. Modified analogues are not the parent peptides, and no human regeneration or longevity effect follows.
  • Patents record claimed inventions and supporting disclosures. Publication or grant does not establish clinical efficacy, safety or marketing approval. Members of one patent family and related journal reports can describe the same experiments.
  • Status labels are Google Patents index snapshots for the displayed publication or application; each record lists the review date. Official registers and every national family member have not been independently checked. These labels do not establish freedom to operate.

Reviewed 2026-11-06.

Read the source ↗
2026 · Peptide oral-delivery application: capsule within capsule — EP4757825A1Epithalon plasma concentration: 430 pg/mL versus 360 and 310 pg/mL
2026Patent / reported experimentsFull text available

Peptide oral-delivery application: capsule within capsule — EP4757825A1

Patent-defined substance or composition · Patent publication

Format: Original patent text and indexed metadata · Reviewed: Claims, selected reported findings and limitations reviewed; supporting experiments not comprehensively appraised.

Filip Majewski · EP4757825A1 · patent family 88092942

The nested-capsule formulation produced higher measured plasma concentrations than two comparator preparations.

Results and tables

Reported patent results

Reported findings

The nested-capsule formulation produced higher measured plasma concentrations than two comparator preparations.

Oral Epithalon formulation comparison described as administration to “a patient”; participant count, study order and variability are not established.

Results · Example 50 comparative pharmacokinetics; narrative accompanying Tables 9–10 and Figure 1.
MeasureResultComparison, timing and statistics
Epithalon plasma concentration430 pg/mL versus 360 and 310 pg/mLExample 50 versus nested-capsule and mixed-capsule comparators · 60 minutes
Epithalon plasma concentration22,300 pg/mL versus 18,600 and 3,000 pg/mLExample 50 versus CE-3 and mixed-capsule comparator · 120 minutes
Sampling windowBlood concentrations followed for 0–360 minutesAbsolute bioavailability and clinical outcomes are not established

A patient example with unestablished replication, HPLC specificity and measurement variability cannot validate oral clinical efficacy or a reliable bioavailability ratio. The values concern this Epithalon formulation, not every peptide listed in the claims.

Source for these results ↗ · Reviewed 2026-11-06

Population / setting
Oral Epithalon formulation comparison described as administration to “a patient”; participant count, study order and variability are not established.
Source reviewed
Original patent publication accessed through Google Patents. Claims, selected reported findings and source limitations checked. The results section identifies the examples, tables and any numerical extraction gaps. No complete experimental audit, prosecution review or legal claim construction was performed.
Study limitations
  • Formulation claims and examples do not establish oral bioavailability or clinical equivalence for every listed peptide; this is separate from the older EP4226918 family.
  • A patient example with unestablished replication, HPLC specificity and measurement variability cannot validate oral clinical efficacy or a reliable bioavailability ratio. The values concern this Epithalon formulation, not every peptide listed in the claims.
  • Patents record claimed inventions and supporting disclosures. Publication or grant does not establish clinical efficacy, safety or marketing approval. Members of one patent family and related journal reports can describe the same experiments.
  • Status labels are Google Patents index snapshots for the displayed publication or application; each record lists the review date. Official registers and every national family member have not been independently checked. These labels do not establish freedom to operate.

Reviewed 2026-11-06.

Read the source ↗
2004 · Epitalon: AEDG molecular patent — US6727227B1HEM female flies: average lifespan: 48 ± 1.5 days treated versus 38 ± 1.6 control
2004Patent / reported experimentsFull text available

Epitalon: AEDG molecular patent — US6727227B1

Patent-defined substance or composition · Patent publication

Format: Original patent text and indexed metadata · Reviewed: Claims, selected reported findings and limitations reviewed; supporting experiments not comprehensively appraised.

Vladimir K. Khavinson · US6727227B1 · patent family 20219149

Epitalon results vary by species, sex, strain and endpoint; the patent does not demonstrate longer human life.

Results and tables

Reported patent results

Reported findings

Epitalon results vary by species, sex, strain and endpoint; the patent does not demonstrate longer human life.

Multiple animal/fly experiments plus small uncontrolled human examples: 14 patients with age-related conditions and 11 with aspirin-sensitive asthma.

Results · Tables 2, 7 and 17; human age-related-condition and aspirin-asthma examples.
MeasureResultComparison, timing and statistics
HEM female flies: average lifespan48 ± 1.5 days treated versus 38 ± 1.6 controlA fly experiment, not human survival · p<0.001
LA female flies: average versus maximum lifespanAverage 20 ± 1.3 versus 22 ± 1.0 days; maximum 44 ± 1.9 versus 36 ± 1.9 daysMaximum lifespan improved while average lifespan did not; separate endpoints · · Maximum comparison p<0.05
Human oxidative markerSuperoxide dismutase 0.26 → 0.61 conventional units/mg protein14-patient uncontrolled age-related-condition example · p<0.05 before/after
Asthma exampleSymptoms described as improved, but no essential change in the listed baseline respiratory-function measures, including FEV111 patients; no placebo group reported

Many exploratory experiments and small selected human examples do not constitute a longevity trial. Strain/sex-specific neutral or unfavorable averages must not be replaced by maximum-lifespan claims.

Source for these results ↗ · Reviewed 2026-11-06

Population / setting
Multiple animal/fly experiments plus small uncontrolled human examples: 14 patients with age-related conditions and 11 with aspirin-sensitive asthma.
Source reviewed
Original patent publication accessed through Google Patents. Claims, selected reported findings and source limitations checked. The results section identifies the examples, tables and any numerical extraction gaps. No complete experimental audit, prosecution review or legal claim construction was performed.
Study limitations
  • The synthetic peptide differs from Epithalamin extract. Patent geroprotection claims do not demonstrate extension of human lifespan.
  • Many exploratory experiments and small selected human examples do not constitute a longevity trial. Strain/sex-specific neutral or unfavorable averages must not be replaced by maximum-lifespan claims.
  • Patents record claimed inventions and supporting disclosures. Publication or grant does not establish clinical efficacy, safety or marketing approval. Members of one patent family and related journal reports can describe the same experiments.
  • Status labels are Google Patents index snapshots for the displayed publication or application; each record lists the review date. Official registers and every national family member have not been independently checked. These labels do not establish freedom to operate.

Reviewed 2026-11-06.

Read the source ↗
2003 · Effect of new peptide bioregulators livagen and epitalon on enkephalin-degrading enzymes in human serumEnkephalinase inhibition, IC50: Livagen 20 µM; Epitalon 500 µM
2003In vitroEnglish abstract

Effect of new peptide bioregulators livagen and epitalon on enkephalin-degrading enzymes in human serum

Defined synthetic peptides · Journal publication

Kost NV, Sokolov OIu, Gabaeva MV, Zolotarev IuA, Malinin VV, Khavinson VKh · Izvestiia Akademii nauk. Seriia biologicheskaia 2003

Livagen and Epitalon inhibited enkephalin breakdown in human serum, with IC50 values of 20 and 500 µM respectively. Neither bound the tested µ- or δ-opioid receptors.

Results and tables

Reported findings and study design

Livagen and Epitalon inhibited enkephalin breakdown in human serum, with IC50 values of 20 and 500 µM respectively. Neither bound the tested µ- or δ-opioid receptors.

Human-serum enzyme assay and rat-brain membrane receptor-binding assay.

Results · Primary-publication indexed abstract
MeasureResultComparison, timing and statistics
Enkephalinase inhibition, IC50Livagen 20 µM; Epitalon 500 µMConcentrations producing 50% inhibition in the serum assay
Opioid-receptor bindingNo interaction detected at tested µ- or δ-receptorsRat-brain membrane assay

These are laboratory concentrations and enzyme endpoints, not evidence of opioid-like clinical effects or an effective human dose.

Source for these results ↗ · Reviewed 2026-11-01

Population / setting
Human-serum enzyme assay and rat-brain membrane receptor-binding assay.
Source reviewed
Original-publication metadata and indexed abstract checked in Europe PMC. No unavailable full-text figures inferred.
Study limitations
  • These are laboratory concentrations and enzyme endpoints, not evidence of opioid-like clinical effects or an effective human dose.

Reviewed 2026-11-01.

Read the source ↗
2001 · Rhythm of protein synthesis in cultures of hepatocytes from rats of different ages. Norm and effect of the peptide livagenProtein synthesis: Increased with Livagen; unchanged with Epitalon
2001In vitroEnglish abstract

Rhythm of protein synthesis in cultures of hepatocytes from rats of different ages. Norm and effect of the peptide livagen

Defined synthetic peptides · Journal publication

Brodskiĭ VIa, Khavinson VKh, Zolotarev IuA, Nechaeva NV, Malinin VV, Novikova TE, Gvazava IG, Fateeva VI · Izvestiia Akademii nauk. Seriia biologicheskaia 2001

Livagen increased protein synthesis in cultured rat liver cells, most strongly in cells from old animals. Epitalon did not change protein-synthesis intensity in this experiment.

Results and tables

Reported findings and study design

Livagen increased protein synthesis in cultured rat liver cells, most strongly in cells from old animals. Epitalon did not change protein-synthesis intensity in this experiment.

Cultured hepatocytes from rats aged 1–24 months.

Results · Primary-publication indexed abstract
MeasureResultComparison, timing and statistics
Protein synthesisIncreased with Livagen; unchanged with EpitalonCultured rat hepatocytes
Age range1–24 months

The animals supplied cells; this was not a treatment trial in living rats or people.

Source for these results ↗ · Reviewed 2026-11-01

Population / setting
Cultured hepatocytes from rats aged 1–24 months.
Source reviewed
Original-publication metadata and indexed abstract checked in Europe PMC. No unavailable full-text figures inferred.
Study limitations
  • The animals supplied cells; this was not a treatment trial in living rats or people.

Reviewed 2026-11-01.

Read the source ↗
2004 · Effects of short peptides on lymphocyte chromatin in senile subjectsChromatin readouts: Ribosomal-gene activation and decondensation reported; no numerical treatment effect supplied
2004In vitroEnglish abstract

Effects of short peptides on lymphocyte chromatin in senile subjects

Defined synthetic peptides · Journal publication

Khavinson VKh, Lezhava TA, Malinin VV · Bulletin of experimental biology and medicine 2004

Five short peptides increased ribosomal-gene activity and altered condensed chromatin in sampled leukocytes. Epitalon, Livagen and Prostamax changed chromosome-1 pericentromeric chromatin; Epitalon and Livagen also changed chromosome 9.

Results and tables

Reported findings and study design

Five short peptides increased ribosomal-gene activity and altered condensed chromatin in sampled leukocytes. Epitalon, Livagen and Prostamax changed chromosome-1 pericentromeric chromatin; Epitalon and Livagen also changed chromosome 9.

Leukocytes sampled from people aged 75–88 years and exposed to peptides in culture.

Results · Primary-publication indexed abstract
MeasureResultComparison, timing and statistics
Chromatin readoutsRibosomal-gene activation and decondensation reported; no numerical treatment effect supplied
Donor ages75–88 years

People donated cells; they were not treated in a clinical trial. Chromatin changes do not establish rejuvenation or longer life. Related chromatin-program publications may overlap.

Source for these results ↗ · Reviewed 2026-11-01

Population / setting
Leukocytes sampled from people aged 75–88 years and exposed to peptides in culture.
Source reviewed
Original-publication metadata and indexed abstract checked in Europe PMC. No unavailable full-text figures inferred.
Study limitations
  • People donated cells; they were not treated in a clinical trial. Chromatin changes do not establish rejuvenation or longer life. Related chromatin-program publications may overlap.

Reviewed 2026-11-01.

Read the source ↗
2022 · Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell LineInflammatory response: Reduced LPS-stimulated TNF/IL-6 in differentiated cells; reduced monocyte adhesion
2022In vitroFull text available

Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell Line

Defined peptides and Thymalin peptide complex tested separately · Journal publication

Avolio F, Martinotti S, Khavinson VK, Esposito JE, Giambuzzi G, Marino A, Mironova E, Pulcini R, Robuffo I, Bologna G, Simeone P, Lanuti P, Guarnieri S, Trofimova S, Procopio AD, Toniato E · International journal of molecular sciences 2022

Five preparations reduced LPS-induced TNF and IL-6 expression in differentiated THP-1 cells and reduced adhesion to activated endothelial cells. Chonluten also reduced monocyte TNF release; the full text notes an apoptotic cell fraction with Chonluten.

Results and tables

Reported findings and study design

Five preparations reduced LPS-induced TNF and IL-6 expression in differentiated THP-1 cells and reduced adhesion to activated endothelial cells. Chonluten also reduced monocyte TNF release; the full text notes an apoptotic cell fraction with Chonluten.

THP-1 leukemia-derived monocytes, differentiated macrophages and an activated HUVEC endothelial adhesion model.

Results · Original full-text XML: Results 2.1–2.5 and Methods; exact graph heights not inferred
MeasureResultComparison, timing and statistics
Inflammatory responseReduced LPS-stimulated TNF/IL-6 in differentiated cells; reduced monocyte adhesion
Chonluten cell responseReduced monocyte TNF; an apoptotic fraction also observed
Test concentration100 ng/mL per preparation; LPS 100 ng/mL in monocyte/macrophage experiments

A cell-line experiment, with peptides tested individually. No patient treatment or clinical anti-inflammatory effect was measured. Numerical cytokine reductions are shown graphically rather than supplied as exact data tables.

Source for these results ↗ · Reviewed 2026-11-01

Population / setting
THP-1 leukemia-derived monocytes, differentiated macrophages and an activated HUVEC endothelial adhesion model.
Source reviewed
Original full-text XML including methods, results and figure captions checked via Europe PMC. Exact effect sizes were not digitized from graphs.
Study limitations
  • A cell-line experiment, with peptides tested individually. No patient treatment or clinical anti-inflammatory effect was measured. Numerical cytokine reductions are shown graphically rather than supplied as exact data tables.

Reviewed 2026-11-01.

Read the source ↗
2007 · Normalizing effect of the pineal gland peptides on the daily melatonin rhythm in old monkeys and elderly people03:00 melatonin · low-baseline subgroup: 20 ± 4 → 49 ± 7 pg/mL
2007Clinical trial / comparisonFull text available

Normalizing effect of the pineal gland peptides on the daily melatonin rhythm in old monkeys and elderly people

Synthetic AEDG (Epitalon)

O. V. Korkushko, B. A. Lapin, N. D. Goncharova, V. Kh. Khavinson · Adv Gerontol. 20(1):74–85

In older adults with low baseline melatonin, Epitalon increased 03:00 plasma melatonin from 20 ± 4 to 49 ± 7 pg/mL; saline changed from 27 ± 4 to 25 ± 4. Evening melatonin also rose, while daytime concentrations did not change significantly.

Results and tables

Reported findings and study design

In older adults with low baseline melatonin, Epitalon increased 03:00 plasma melatonin from 20 ± 4 to 49 ± 7 pg/mL; saline changed from 27 ± 4 to 25 ± 4. Evening melatonin also rose, while daytime concentrations did not change significantly.

Dose, route and schedule

Epitalon 0.01 mg intramuscularly daily for 10 days (0.1 mg total); saline 2 mL daily for 10 days. A separate Epithalamin arm received 10 mg every third day for five injections. Historical study methods, not personal-use instructions.

Protocol source ↗ · Original methods

Results · Original Russian methods and Table 7, printed pages 75–76 and 79, checked; table visually verified.
MeasureResultComparison, timing and statistics
03:00 melatonin · low-baseline subgroup20 ± 4 → 49 ± 7 pg/mLEpitalon n=12; saline n=8: 27 ± 4 → 25 ± 4 pg/mL · p<0.05 versus baseline and post-treatment saline
21:00 melatonin12 ± 3 → 25 ± 4 pg/mLSaline: 12 ± 3 → 11 ± 3 pg/mL · p<0.05 versus baseline and post-treatment saline
Preserved baseline pineal functionNo melatonin change in 3 Epitalon recipients
Human low-melatonin subgroup · original Table 7
Human low-melatonin subgroup · original Table 7
TimeEpitalon before (n=12)Epitalon afterSaline before (n=8)Saline after
09:009 ± 110 ± 29 ± 29 ± 3
15:005 ± 16 ± 14 ± 14 ± 1
21:0012 ± 325 ± 4*12 ± 311 ± 3#
03:0020 ± 449 ± 7*27 ± 425 ± 4#

All values pg/mL, with dispersion as printed. * p<0.05 versus pretreatment; # p<0.05 versus Epitalon. These are the low-function subgroups, not all 40 intervention participants.

The Epitalon low-melatonin comparison contains 12 treated and 8 saline recipients; the three Epitalon recipients with preserved function showed no change. These are hormone measurements, not demonstrated sleep improvement or lifespan extension. Human and monkey results are separate.

Source for these results ↗ · Reviewed 2026-10-31

Population / setting
40 older intervention participants: 15 Epitalon, 15 Epithalamin and 10 saline; 10 young references. Baseline survey separately included 49 older and 15 younger people.
Source reviewed
Original Russian methods and Table 7, printed pages 75–76 and 79, checked; table visually verified.
Study limitations
  • The Epitalon low-melatonin comparison contains 12 treated and 8 saline recipients; the three Epitalon recipients with preserved function showed no change.
  • These are hormone measurements, not demonstrated sleep improvement or lifespan extension. Human and monkey results are separate.

Reviewed 2026-10-31.

Read the source ↗
2002 · Pineal-regulating tetrapeptide epitalon improves eye retina condition in retinitis pigmentosaReported overall clinical effect: More than 90% of treated cases
2002Human comparative studyFull text available

Pineal-regulating tetrapeptide epitalon improves eye retina condition in retinitis pigmentosa

Synthetic AEDG (Epitalon)

Vladimir Khavinson, Michael Razumovsky, Svetlana Trofimova, Roman Grigorian, Anna Razumovskaya · Neuroendocrinol Lett. 23(4):365–368

The authors reported a positive clinical effect in more than 90% of Epitalon-treated retinitis-pigmentosa cases. Visual acuity rose by an average of 0.15–0.25; total visual-field borders expanded by 90–120° in 64.8% of treated cases. Conventional-care controls had visual-function improvement in 31.5% of cases.

Results and tables

Reported findings and study design

The authors reported a positive clinical effect in more than 90% of Epitalon-treated retinitis-pigmentosa cases. Visual acuity rose by an average of 0.15–0.25; total visual-field borders expanded by 90–120° in 64.8% of treated cases. Conventional-care controls had visual-function improvement in 31.5% of cases.

Dose, route and schedule

Parabulbar Epitalon 5 micrograms into each eye once daily for 10 days; the paper states 100 micrograms per bilateral course. Controls received conventional vasodilator, angioprotector and antisclerotic treatment. Historical ophthalmology study methods, not self-administration guidance.

Protocol source ↗ · Original methods, page 366

Results · Original English scan, printed pages 366–367: human methods, results and Table II visually checked.
MeasureResultComparison, timing and statistics
Reported overall clinical effectMore than 90% of treated casesAuthors’ overall assessment; not the same endpoint as control visual-function response
Average visual-acuity gain0.15–0.25A 0.4 gain reported in 18 eyes (7.6% as printed)
Visual-field expansion90–120° in 64.8%Total visual-field borders; control expansion 40–50° reported in 86.9%
Control visual-function improvement31.5% of casesMaximum acuity gain of 0.15 in 4.3%; acuity decreased in 4 eyes
Adverse effectsNone reported by the authorsNo systematic long-term safety denominator or follow-up established
Human retinal electrophysiology · original Table II
Human retinal electrophysiology · original Table II
MeasureControl beforeControl afterEpitalon beforeEpitalon after
First-neuron amplitude (µV)19.9 ± 1.118.8 ± 1.122.4 ± 1.727.3 ± 1.6*
First-neuron latency (ms)25.2 ± 1.324.8 ± 1.923.9 ± 1.222.7 ± 1.2
Second-neuron amplitude (µV)160.4 ± 10.1165.3 ± 10.2150.8 ± 9.9210.6 ± 11.5*
Second-neuron latency (ms)75.5 ± 4.889.1 ± 5.1*66.8 ± 4.358.8 ± 3.9

Values and dispersion transcribed from Table II. * p<0.05 versus pretreatment. The separate rat experiment is not included in this human table.

Allocation and masking are not described sufficiently to establish a randomized trial. Percentages refer to different outcomes and sometimes eyes; they are not one common response measure. The methods state 162 patients examined and 46 controls; do not describe 162 as the treated-arm size. The paper reports 18 eyes as 7.6%, a denominator not fully reconciled in the text. Retinal-disease findings do not demonstrate healthy-person vision enhancement or longevity.

Source for these results ↗ · Reviewed 2026-10-31

Population / setting
162 patients (324 eyes), ages 18–72, examined; the report identifies 46 control patients (92 eyes).
Source reviewed
Original English scan, printed pages 366–367: human methods, results and Table II visually checked.
Study limitations
  • Allocation and masking are not described sufficiently to establish a randomized trial. Percentages refer to different outcomes and sometimes eyes; they are not one common response measure.
  • The methods state 162 patients examined and 46 controls; do not describe 162 as the treated-arm size. The paper reports 18 eyes as 7.6%, a denominator not fully reconciled in the text.
  • Retinal-disease findings do not demonstrate healthy-person vision enhancement or longevity.

Reviewed 2026-10-31.

Read the source ↗
2021 · AEDG Peptide Regulates the Expression of Circadian Genes Clock, Cry2, Csnk1e in Human Immune CellsParticipants: 75 women; 40 entered treatment/placebo comparison
2021Clinical trial / comparisonFull text available

AEDG Peptide Regulates the Expression of Circadian Genes Clock, Cry2, Csnk1e in Human Immune Cells

Synthetic AEDG (Epitalon)

Vladimir Khavinson, Natalia Linkova, Oleg Ivko · World Heart Journal. 13(1):189–191

After 20 days of sublingual AEDG, Cry2 expression doubled from baseline and was 1.2-fold higher than placebo. Csnk1e expression fell 2.1-fold from baseline and was 1.8-fold lower than placebo; all reported comparisons p<0.05.

Results and tables

Reported findings and study design

After 20 days of sublingual AEDG, Cry2 expression doubled from baseline and was 1.2-fold higher than placebo. Csnk1e expression fell 2.1-fold from baseline and was 1.8-fold lower than placebo; all reported comparisons p<0.05.

Dose, route and schedule

Sublingual AEDG solution-spray, 0.5 mg/day for 20 days, versus sublingual 0.9% saline on the same schedule. Historical study methods, not a recommended regimen.

Protocol source ↗ · Original methods

Results · Original three-page English article checked; methods and numerical results on pages 189–191.
MeasureResultComparison, timing and statistics
Participants75 women; 40 entered treatment/placebo comparison35 normal-melatonin references
Cry2 expression2-fold higher than baseline; 1.2-fold higher than placebop<0.05
Csnk1e expression2.1-fold lower than baseline; 1.8-fold lower than placebop<0.05

Peripheral blood gene-expression markers are not clinical sleep or longevity outcomes. This is a related report to Ivko 2020 and its 2021 English translation; cohort overlap is unresolved, so these reports are grouped rather than counted as independent replication.

Source for these results ↗ · Reviewed 2026-10-31

Population / setting
75 night-shift women ages 40–59: 35 normal-melatonin references; 40 with reduced function randomly divided between AEDG and placebo.
Source reviewed
Original three-page English article checked; methods and numerical results on pages 189–191.
Study limitations
  • Peripheral blood gene-expression markers are not clinical sleep or longevity outcomes.
  • This is a related report to Ivko 2020 and its 2021 English translation; cohort overlap is unresolved, so these reports are grouped rather than counted as independent replication.

Reviewed 2026-10-31.

Read the source ↗
2020 · AEDG peptide regulates human circadian rhythms genes expression during pineal gland accelerated agingUrinary 6-sulfatoxymelatonin: 1.7-fold increase
2020Human study · design details unresolvedEnglish abstract

AEDG peptide regulates human circadian rhythms genes expression during pineal gland accelerated aging

Synthetic AEDG (Epitalon)

O. M. Ivko, N. S. Linkova, A. R. Ilina, A. A. Sharova, G. A. Ryzhak · Adv Gerontol. 33(3):429–435; English translation: Advances in Gerontology 11:53–58 (2021)

The human study reports a 1.7-fold increase in urinary 6-sulfatoxymelatonin, 1.9–2.1-fold normalization of Clock/Csnk1e overexpression and a twofold increase in Cry2 expression.

Results and tables

Reported findings and study design

The human study reports a 1.7-fold increase in urinary 6-sulfatoxymelatonin, 1.9–2.1-fold normalization of Clock/Csnk1e overexpression and a twofold increase in Cry2 expression.

Results · Primary indexed English abstract checked; full Russian paper and translation not recovered.
MeasureResultComparison, timing and statistics
Urinary 6-sulfatoxymelatonin1.7-fold increaseComparator not specified in the abstract
Clock / Csnk1e expression1.9–2.1-fold normalization of overexpression
Cry2 expression2-fold increase

The abstract does not specify the comparator for the urinary 1.7-fold figure or provide absolute concentrations. The English translation (10.1134/S2079057021010380) is the same publication, not another trial. The related 2021 World Heart Journal report is grouped because cohort overlap is unresolved.

Source for these results ↗ · Reviewed 2026-10-31

Population / setting
Middle-aged people with reduced melatonin-producing function; no cohort size given in the indexed abstract.
Source reviewed
Primary indexed English abstract checked; full Russian paper and translation not recovered.
Study limitations
  • The abstract does not specify the comparator for the urinary 1.7-fold figure or provide absolute concentrations.
  • The English translation (10.1134/S2079057021010380) is the same publication, not another trial. The related 2021 World Heart Journal report is grouped because cohort overlap is unresolved.

Reviewed 2026-10-31.

Read the source ↗
2026 · Epitalon and Epithalamin: A Narrative Review of Mechanistic, Preclinical, and Clinical Evidence.
2026ReviewEnglish abstract

Epitalon and Epithalamin: A Narrative Review of Mechanistic, Preclinical, and Clinical Evidence.

Jain A, Gallacher DM, Issa MA, Deer TR, Yong RJ, Diwan S, Lee W, Sayed D, Amirdelfan K, Robinson CL · International journal of molecular sciences

This 2026 review separates synthetic Epitalon from the pineal extract Epithalamin. It brings together work on telomeres, circadian rhythms and cellular aging, while finding that clinical benefit and long-term safety still need stronger human studies.

Population / setting
Narrative review of experimental and human literature through 22 September 2026
Source reviewed
Publication metadata and indexed abstract checked through Europe PMC on 28 October 2026; full text not appraised.
Study limitations
  • Narrative synthesis, not a new experiment or a pooled estimate of treatment benefit.
  • Epithalamin extract findings cannot be assigned directly to synthetic Epitalon.

Reviewed 2026-10-28.

Read the source ↗
2026 · LCP2 mediates SUV39H1-driven cellular senescence-related chemoresistance in natural killer/T-cell lymphoma.
2026Animal / experimentalEnglish abstract

LCP2 mediates SUV39H1-driven cellular senescence-related chemoresistance in natural killer/T-cell lymphoma.

Zhang Y, Qian S, Yang Q, Shi Z, Dong M, Wang Z, Yang Z, Wu S, Li Z, Zhang M, Zhang X, Chen Q · Cell death & disease

The authors report that targeting a senescence-related pathway with Epitalon and Chaetocin partly removed therapy-induced senescent cells and improved chemotherapy response in experimental models. Patient plasma was used for biomarker analysis, not to test Epitalon treatment.

Population / setting
Drug-resistant lymphoma cell models, patient plasma biomarker analysis and an in-vivo experimental model
Source reviewed
Publication metadata and indexed abstract checked through Europe PMC on 28 October 2026; full text not appraised.
Study limitations
  • The abstract discusses Epitalon and Chaetocin together; it does not establish an isolated Epitalon effect or support self-treatment of cancer.
  • Animal and laboratory findings do not establish benefit in people.
  • Abstract only. Full methods, sample-size details and adverse-event tables were outside the review.

Reviewed 2026-10-28.

Read the source ↗
2023 · Pharmaceutical single dosage form for oral delivery of peptides — EP4226918A1GHK-Cu at 60 minutes: 350 pg/mL inventive formulation versus 320 and 150 pg/mL comparators
2023Patent / reported experimentsFull text available

Pharmaceutical single dosage form for oral delivery of peptides — EP4226918A1

· Patent report

Filip Majewski · European patent application EP4226918A1

A capsule-in-capsule Epitalon formulation produced higher reported plasma concentrations than two comparison capsules. At 120 minutes, Table 4 reports 18,600 pg/mL versus 3,000 and 1,000 pg/mL.

Results and tables

Reported patent results

Reported findings

The disclosure reports higher plasma peptide concentrations for nested-capsule formulations than selected comparators.

Oral peptide-delivery patent examples described as administration to a patient; sample size, repeatability and assay validation are not established.

Dose, route and schedule

Example 2 used 2 mg Epitalon with lauroyl L-carnitine and citric acid in nested enteric capsules; blood sampling extended to 360 minutes.

Protocol source ↗ · Patent Example 2

Results · Examples 1–2, plasma-concentration narratives and corresponding tables.
MeasureResultComparison, timing and statistics
GHK-Cu at 60 minutes350 pg/mL inventive formulation versus 320 and 150 pg/mL comparatorsFormulation examples; not a clinical skin or wound outcome · 60 minutes
Epithalon at 60 minutes360 pg/mL inventive formulation versus 310 and 50 pg/mL comparatorsIndividual patent pharmacokinetic example · 60 minutes

Plasma measurements alone do not establish absolute bioavailability, clinical benefit or oral equivalence. Assay specificity, replication and patient characteristics are incompletely reported.

Source for these results ↗ · Reviewed 2026-11-06

Population / setting
Oral peptide-delivery patent examples described as administration to a patient; sample size, repeatability and assay validation are not established.
Source reviewed
Example 2, analytical methods and Tables 3–4 checked. No assessment of patent validity or regulatory approval.
Study limitations
  • Patent-reported measurements, not a peer-reviewed clinical trial or an absolute bioavailability estimate.
  • Results concern a specific formulation; they cannot be transferred to ordinary capsules. Table 3 and Table 4 differ for the second comparator.

Reviewed 2026-11-06.

Read the source ↗
2025 · Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity.
2025In vitroFull text available

Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity.

Al-Dulaimi S, Thomas R, Matta S, Roberts T · Biogerontology. 2025.

Epitalon was associated with telomere extension through telomerase-related changes in normal cells and alternative lengthening of telomeres (ALT) in cancer cell lines.

Population / setting
Normal human epithelial/fibroblast cells and 21NT/BT474 breast-cancer cell lines
Source reviewed
Repository full text checked for design, participants and reported outcomes; no independent reanalysis.
Study limitations
  • Cell experiments do not establish human longevity benefits or clinical cancer effects.
  • Figures 1–3 were corrected after publication; read the accompanying correction (DOI 10.1007/s10522-025-10326-8).

Reviewed 2026-10-08.

Read the source ↗
2025 · Correction: Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity.
2025Correction / retraction / concern noticeFull text available

Correction: Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity.

· Publisher correction; no new experiment

Al-Dulaimi S, Thomas R, Matta S, Roberts T · Biogerontology. 2025.

The publisher replaced incorrect Figures 1, 2 and 3 covering telomere length, telomerase and ALT measurements. The original article was corrected.

Population / setting
Correction to the 2025 cell-line paper; no new participant cohort
Source reviewed
Repository full text checked for design, participants and reported outcomes; no independent reanalysis. Evidence category checked against indexed publication types, population indexing and available abstract on 2026-10-16; this does not imply full-text methods appraisal.
Study limitations
  • A correction is not an independent experiment or replication.

Reviewed 2026-10-08.

Read the source ↗
2025 · The Antioxidant Tetrapeptide Epitalon Enhances Delayed Wound Healing in an in Vitro Model of Diabetic Retinopathy.
2025In vitroFull text available

The Antioxidant Tetrapeptide Epitalon Enhances Delayed Wound Healing in an in Vitro Model of Diabetic Retinopathy.

Gatta M, Dovizio M, Milillo C, Ruggieri AG, Sallese M, Antonucci I, Trofimov A, Khavinson V, Trofimova S, Bruno A, Ballerini P · Stem cell reviews and reports. 2025.

Epitalon improved scratch-wound closure and reduced oxidative-stress, epithelial–mesenchymal-transition and fibrosis-related measures in a retinal cell model.

Population / setting
High-glucose-exposed ARPE-19 retinal pigment epithelial cells
Source reviewed
Repository full text checked for design, participants and reported outcomes; no independent reanalysis.
Study limitations
  • Cell-culture model, not a clinical diabetic-retinopathy trial.
  • Retinal delivery, patient outcomes and clinical safety remain unestablished by this experiment.

Reviewed 2026-10-08.

Read the source ↗
2002 · Effects of short peptides on thymocyte blast transformation and signal transduction along the sphingomyelin pathway.
2002In vitroEnglish abstract

Effects of short peptides on thymocyte blast transformation and signal transduction along the sphingomyelin pathway.

· Original journal report

Khavinson VKh, Rybakina EG, Malinin VV, Pivanovich IY, Shanin SN, Korneva EA · Bulletin of experimental biology and medicine · PMID 12420072

Vilon stimulated thymocyte proliferation most strongly; Epitalon was less active and Cortagen showed no such effect.

Population / setting
Mouse thymocytes
Source reviewed
Primary citation and indexed abstract reviewed through Europe PMC. Full article not appraised.
Study limitations
  • A neutral result in one cell assay does not determine effects in other tissues or in people.
  • Full methods, reporting completeness and independent replication remain to be appraised.

Reviewed 2026-10-05.

Read the source ↗
2011 · Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA.
2011In vitroEnglish abstract

Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA.

· Original journal report

Fedoreyeva LI, Kireev II, Khavinson VKh, Vanyushin BF · Biochemistry. Biokhimiia · PMID 22117547

The paper identifies Testagen as Lys–Glu–Asp–Gly (KEDG). Labeled short peptides entered cells and nuclei; binding patterns differed between DNA sequences.

Population / setting
HeLa cells and nucleic-acid fluorescence assays
Source reviewed
Primary citation and indexed abstract reviewed through Europe PMC. Full article not appraised.
Study limitations
  • Cell penetration and fluorescence-based binding do not establish hormonal, anti-aging or other clinical effects.
  • Full methods, reporting completeness and independent replication remain to be appraised.

Reviewed 2026-10-05.

Read the source ↗
2011 · [Effects of Lys-Glu-Asp-Gly and Ala-Glu-Asp-Gly peptides on hormonal activity and thyroid morphology in hypophysectomized mature and old birds].
2011Animal / experimentalEnglish abstract

[Effects of Lys-Glu-Asp-Gly and Ala-Glu-Asp-Gly peptides on hormonal activity and thyroid morphology in hypophysectomized mature and old birds].

· Original journal report

Kuznik BI, Pateiuk AV, Rusaeva NS, Baranchugova LM, Obydenko VI · Advances in gerontology = Uspekhi gerontologii · PMID 21809626

KEDG and AEDG improved thyroid-related hormonal and morphological measures after experimental pituitary removal.

Population / setting
Mature and old hypophysectomized birds
Source reviewed
Primary citation and indexed abstract reviewed through Europe PMC. Full article not appraised.
Study limitations
  • This unusual avian model does not demonstrate a testosterone effect or treatment of human hypothyroidism; KEDG is distinct from thyroid extracts.
  • Full methods, reporting completeness and independent replication remain to be appraised.

Reviewed 2026-10-05.

Read the source ↗
2008 · Investigation of antihypoxic properties of short peptides
2008Animal / experimentalEnglish abstract

Investigation of antihypoxic properties of short peptides

Synthetic peptide / defined-sequence research · Journal publication

Kozina LS · Advances in gerontology = Uspekhi gerontologii 21(1):61-67. PMID 18546825

The comparative report describes antihypoxic activity, with the largest effect for Pinealon in the tested model.

Population / setting
Experimental hypobaric/prenatal hypoxia models
Source reviewed
Europe PMC indexed citation and abstract checked. Full original paper not reviewed.
Study limitations
  • Model-specific ranking cannot be transferred to humans or occupational exposure protection.
  • Full methods, adverse-event reporting and independent replication remain to be appraised.

Reviewed 2026-09-30.

Read the source ↗
2008 · Biological activity of regulatory peptides in model experiments in vitro
2008In vitroEnglish abstract

Biological activity of regulatory peptides in model experiments in vitro

Synthetic peptide / defined-sequence research · Journal publication

Kozina LS, Arutiunian AV, Stvolinskiĭ SL, Khavinson VKh · Advances in gerontology = Uspekhi gerontologii 21(1):68-73. PMID 18546826

The peptides did not behave as direct antioxidants. Effects on lipid peroxidation, membrane stability and neuronal survival differed by peptide.

Population / setting
Lipoprotein, erythrocyte and neuronal model experiments
Source reviewed
Europe PMC indexed citation and abstract checked. Full original paper not reviewed.
Study limitations
  • Do not recast these model findings as a universal antioxidant or anti-aging effect.
  • Full methods, adverse-event reporting and independent replication remain to be appraised.

Reviewed 2026-09-30.

Read the source ↗
2016 · Peptide Regulation of Skin Fibroblast Functions during Their Aging In Vitro
2016In vitroEnglish abstract

Peptide Regulation of Skin Fibroblast Functions during Their Aging In Vitro

Lin'kova NS, Drobintseva AO, Orlova OA, Kuznetsova EP, Polyakova VO, Kvetnoy IM, Khavinson VKh · Bull Exp Biol Med 161(1):175-178. PMID 27259496

The peptides altered proliferation, remodeling and aging-associated protein markers. AED and AEDG also reduced caspase-dependent apoptosis in this model.

Population / setting
Aging skin-fibroblast cultures; KE, KED, AED and AEDG
Source reviewed
Indexed abstract and citation checked via Europe PMC / PubMed; full methods and risk of bias not appraised.
Study limitations
  • Cultured skin cells, not a human cartilage or longevity trial.
  • Changes in Ki-67, CD98hc, MMP-9 and caspase-3 do not establish tissue repair in patients.

Reviewed 2026-09-29.

Read the source ↗
2017 · Identification of Peptide AEDG in the Polypeptide Complex of the Pineal GlandFree amino acids: 3.26%
2017Analytical / composition studyEnglish abstract

Identification of Peptide AEDG in the Polypeptide Complex of the Pineal Gland

Khavinson VK, Kopylov AT, Vaskovsky BV, Ryzhak GA, Lin'kova NS · Bull Exp Biol Med 164(1):41-43. PMID 29124531

Mass spectrometry/HPLC and selective reaction monitoring identified AEDG in the pineal complex. This supplies a molecular link to the synthetic tetrapeptide.

Results and tables

Reported findings and study design

HPLC/mass-spectrometry analysis of pineal polypeptide complex; AEDG identified among tetrapeptides.

Results · Previously retrieved indexed abstract; numerical statements checked against the saved source text
MeasureResultComparison, timing and statistics
Free amino acids3.26%
Dipeptides23.19%
Tripeptides50.72%
Tetrapeptides22.10%
Pentapeptides0.72%

These are composition fractions of the complex, not AEDG concentration or bioavailability. Detection of AEDG does not make extract clinical results interchangeable with synthetic Epitalon.

Source for these results ↗ · Reviewed 2026-10-29

Population / setting
Pineal polypeptide-complex composition
Source reviewed
Indexed abstract and citation checked via Europe PMC / PubMed; full methods and risk of bias not appraised.
Study limitations
  • Detection in an extract does not prove that this peptide accounts for all extract effects.
  • Composition analysis does not establish clinical equivalence.

Reviewed 2026-09-29.

Read the source ↗
2019 · Effect of short peptides on neuronal differentiation of stem cells
2019In vitroEnglish abstract

Effect of short peptides on neuronal differentiation of stem cells

Caputi S, Trubiani O, Sinjari B, Trofimova S, Diomede F, Linkova N, Diatlova A, Khavinson V · Int J Immunopathol Pharmacol 33:2058738419828613. PMID 30791821

Examined AED, KED, KE, AEDG and their mixture. Increased neuronal-marker expression was reported for KED and the mixture.

Population / setting
Human periodontal-ligament stem-cell cultures
Source reviewed
Indexed abstract and citation checked via Europe PMC / PubMed; full methods and risk of bias not appraised.
Study limitations
  • Mixture results cannot be assigned to AED alone.
  • Marker expression is not proof of functional neuronal repair or a human clinical benefit.

Reviewed 2026-09-29.

Read the source ↗
2013 · Mechanism of Biological Activity of Short Peptides: Cell Penetration and Epigenetic Regulation of Gene Expression
2013ReviewFull text available

Mechanism of Biological Activity of Short Peptides: Cell Penetration and Epigenetic Regulation of Gene Expression

V. Kh. Khavinson, A. Yu. Solovyev, S. I. Tarnovskaya, N. S. Linkova · Biology Bulletin Reviews 3(6):451–455

Mechanistic review with a table of 15 short peptides on page 453. Tissue labels in the research map are the authors’ proposed targets, not established clinical indications.

Population / setting
Review of earlier research
Source reviewed
Author-hosted English PDF and its peptide table checked. Each cited experiment remains a separate appraisal task.
Study limitations
  • Source-linked does not mean a completed risk-of-bias review.
  • A review is not an independent clinical replication; proposed mechanisms do not establish efficacy or safety.

Reviewed 2026-09-27.

Read the source ↗
2022 · Neuroepigenetic Mechanisms of Action of Ultrashort Peptides in Alzheimer’s Disease
2022ReviewFull text available

Neuroepigenetic Mechanisms of Action of Ultrashort Peptides in Alzheimer’s Disease

Author list available on linked original paper · International Journal of Molecular Sciences 23(8):4259

Develops hypotheses connecting short peptides with gene regulation and neurodegenerative processes. Hypotheses are retained as mechanistic proposals, not clinical conclusions.

Population / setting
Review of earlier research
Source reviewed
Source scope and bibliographic record checked; see the original experiments for methods and results.
Study limitations
  • Source-linked does not mean a completed risk-of-bias review.
  • A review is not an independent clinical replication; proposed mechanisms do not establish efficacy or safety.

Reviewed 2026-09-27.

Read the source ↗
2023 · Feasibility of Transport of 26 Biologically Active Ultrashort Peptides via LAT and PEPT Family Transporters
2023Study design unresolvedFull text available

Feasibility of Transport of 26 Biologically Active Ultrashort Peptides via LAT and PEPT Family Transporters

V. Kh. Khavinson, N. S. Linkova, A. I. Rudskoy, M. G. Petukhov · Original article; author-hosted PDF

Examines transporter interactions for 26 ultrashort peptides. Feasibility at this level is not demonstrated oral bioavailability, brain delivery or clinical efficacy.

Population / setting
Molecular transport feasibility investigation
Source reviewed
Title, authors and abstract checked; detailed experimental/computational methods await appraisal.
Study limitations
  • Source-linked does not mean a completed risk-of-bias review.
  • A review is not an independent clinical replication; proposed mechanisms do not establish efficacy or safety.

Reviewed 2026-09-27.

Read the source ↗
2025 · Overview of Epitalon—Highly Bioactive Pineal Tetrapeptide with Promising Properties
2025ReviewFull text available

Overview of Epitalon—Highly Bioactive Pineal Tetrapeptide with Promising Properties

S. K. Araj, J. Brzezik, K. Mądra-Gackowska, Ł. Szeleszczuk · International Journal of Molecular Sciences 26(6):2691

Contemporary review of AEDG/Epitalon chemistry and experimental literature. Epithalamin extract and defined Epitalon peptide are distinguished; evidence for one is not automatically evidence for the other.

Population / setting
Review of earlier research
Source reviewed
Source scope and bibliographic record checked; see the original experiments for methods and results.
Study limitations
  • Source-linked does not mean a completed risk-of-bias review.
  • A review is not an independent clinical replication; proposed mechanisms do not establish efficacy or safety.

Reviewed 2026-09-27.

Read the source ↗

Follow shared publications or research classes. These links do not establish equivalent effects between compounds.

Research collection curated by @PepMariner · editorial standards. Send a source correction ↗

Browse bibliography & PDFs ↗