At sea: what felt useful
Six-hour watches, short sleep windows, heat and cargo work are the setting for these observations. These notes connect the reported sleep and work experiences with conditions aboard.
After roughly 100 cumulative days at sea/work
“Subjectively I’d say the highest ROI have been Cortexin & Bemitil thus far”
The recap describes trying different combinations across work at sea. Cortexin and Bemitil were the two standouts at that point. Bemitil, Bromantane and Nootropil together also received a favorable personal assessment for work in heat, with the author explicitly saying more data were needed.
These were accumulated days at sea/work, not a continuous 100-day course of every compound. The ranking describes perceived usefulness during work, without a measured heat-protection effect.
Read the full 100-day post ↗What felt useful—and in what way
These are the author’s personal comparisons.
Cortexin
The stronger subjective experience after Pinealon: more mental bandwidth, less conventional stimulation, and an unexpected sleep/recovery component.
Bemitil
Alongside Cortexin, one of the two compounds singled out as highest value after roughly 100 cumulative days at sea/work.
Pinealon
An early standout for the author; the September recap says Cortexin subsequently became the more noticeable experience.
Cerebrolysin
Placed on the recovery side of the author’s personal comparison, with less of the activating effect he associated with Cortexin.
Bemitil + Bromantane + Nootropil
Viewed favorably for demanding work in heat. The author explicitly wanted more data; the retrospective supplies no measured heat-protection effect.
The working conditions behind the posts
Six on, six off
Off-watch time includes more than sleep. The posts describe a short main block, naps and a midnight watch. A percentage from one block does not describe the whole day.
Heat and cargo operations
The late-October posts describe hot deck work and cargo operations beginning without a break after boarding. Workload and task mix belong beside any change in perceived strain.
Weather, travel and detection gaps
The earlier hitch includes disturbed sleep in building seas, crew change, travel home and missed automatic sleep detection. These are part of the record, alongside the more favorable reports.
Dated vessel notes
Dates below are the dates displayed on the public posts. Reflections and plans are labeled so they are not mistaken for a daily administration log.
What stood out after ten days of Cortexin
Work context: Six-on/six-off watches, short sleep windows and the midnight watch.
Described more mental bandwidth without a conventional stimulant feeling, better mood, vivid dreams and unexpectedly high WHOOP deep/REM readings. Pinealon had previously stood out most; Cortexin had become the stronger subjective experience. Cerebrolysin felt more like a recovery component.
Reading the record: This recap explains what “useful” meant to the author: perceived capacity during work and the quality of short sleep blocks. The post also identifies sleep deprivation and the concurrent stack as possible contributors.
Original @PepMariner post ↗The roughly 100-day retrospective
Work context: Approximately 100 cumulative days at sea/work, across different combinations.
Named Cortexin and Bemitil as the highest-value compounds so far. Described a favorable impression of Bemitil + Bromantane + Nootropil during work in heat, while saying that more data were needed. A possible winter trial of Bemitil with Phenotropil was a future idea.
Reading the record: “100 days” refers to cumulative time at sea/work, not 100 consecutive days on every compound. The ranking describes personal usefulness; no heat-protection measurements were reported. The winter combination was a plan, not an outcome.
Original @PepMariner post ↗Harder to wake after a pre-watch nap
Work context: Pre-watch nap late in the earlier hitch.
Reported 40% restorative sleep, but said getting up had become harder over the previous day or so. Wondered whether the perceived residual Cortexin effect was diminishing.
Reading the record: This less favorable observation belongs alongside the higher readings. The proposed explanation is the author’s interpretation, not confirmation of a compound wearing off.
Original @PepMariner post ↗Two days of missed automatic sleep detection
Work context: WHOOP sleep detection during the earlier hitch.
Said WHOOP had failed to pick up sleep for two days, requiring manual entry, and reported a restorative-sleep reading around 50%.
Reading the record: Manual entry and missed detection matter when comparing posts with the export. This note does not identify a one-to-one match to a particular exported episode.
Original @PepMariner post ↗Epitalon alone did not always feel better
Work context: Reply comparing previous Pinealon and Epitalon experiences.
Reported not liking Epitalon alone because sleep felt worse, while feeling more rested with Pinealon and Epitalon together before sleep. Said Pinealon had been a favorite until Cortexin.
Reading the record: The later positive Epitalon block readings do not erase this earlier mixed experience. It is a personal comparison across different conditions, not a test of whether the combination outperforms either component.
Original @PepMariner post ↗Weather disrupted sleep before crew change
Work context: Building seas and anticipated departure from the vessel the following day.
Reported another poor attempt at sleep during worsening weather, while still feeling reasonably well. Said Bemitil was the only compound taken that day and raised cumulative stack effects as a possible explanation.
Reading the record: Weather and interrupted sleep provide important context for the wearable record. A report of feeling decent after poor sleep is a subjective observation, not a measurement of task accuracy.
Original @PepMariner post ↗Leaving the vessel after more than a month
Work context: Travel home after more than 30 days at work/sea.
Reported flying home, returning to a normal sleep schedule and intending to take a break from compounds for a few days.
Reading the record: This is the transition relevant to the October 9–10 WHOOP measurements. Travel and a different sleep opportunity changed alongside the planned compound break; the post does not verify subsequent abstinence.
Original @PepMariner post ↗Four-hour sleep and a nap: a retrospective comparison
Work context: Commentary about the author’s usual work pattern, not confirmation of being aboard that day.
Compared his own work routine to split-sleep schedules, saying that his main sleep at work was closer to four hours.
Reading the record: This helps explain why the diary distinguishes a main block, naps and total recorded sleep. It is not a new WHOOP export or evidence of a particular day’s sleep duration.
Original @PepMariner post ↗Heading back to work
Work context: Return-to-work travel; a separate hitch from the September–early October record.
Said he was on his way back to work and intended to try Chlodantane alongside the usual peptides, with a fuller account to follow after boarding.
Reading the record: A return-to-work post establishes a transition, not an exact boarding time, complete regimen or observed response.
Original @PepMariner post ↗First B-300 experiment aboard
Work context: Aboard the vessel, with six-hour watches, heavy equipment and interrupted sleep.
Explicitly called this day one of a B-300 experiment, while continuing other compounds. Planned to track endurance, mental fatigue, sleep quality and recovery through the hitch.
Reading the record: This is a reported start, not a completed B-300 result. Because the other compounds continued, subsequent changes cannot be assigned to B-300 alone.
Original @PepMariner post ↗Why Picamilon remained in the work plan
Work context: Planning for the new hitch; reflecting on accumulated mental stress during six-hour watches.
Said he intended to use Picamilon in the same way as on the previous hitch. The quoted earlier account described a calmer subjective state while trying to remain vigilant, rather than adding another stimulant.
Reading the record: The earlier experience explains the intended role. This post does not establish that Picamilon was taken on each watch or improved objective vigilance.
Original @PepMariner post ↗Several components changed together
Work context: Preparation before boarding and a proposed daily support blend.
Described a GHK-Cu, Cartalax and KPV blend, with BPC-157/TB-500 kept separately for possible use.
Reading the record: This records another concurrent change in the experiment. Mentioning a preparation or keeping a compound available does not establish daily administration or a response.
Original @PepMariner post ↗First sleep block: more than 60% deep + REM reported
Work context: Split sleep between watches; different daytime and nighttime compounds.
Reported more than 60% restorative sleep in the first block after pre-sleep Epitalon. Listed Bemitil/Trekrezan, Vilon and Vesugen during the day, and Chlodantane on the night watch. Suspected that Bemitil might also influence sleep.
Reading the record: The percentage is the author’s posted reading for one block. Its duration and stage minutes are not transcribed here, and no matching late-October raw export is available. The proposed Bemitil/Chlodantane mechanisms remain hypotheses.
Original @PepMariner post ↗Second sleep block and a hot day on deck
Work context: Deck temperature described as roughly 95 degrees; another high-strain workday.
Reported about 55% restorative sleep for the second block after intranasal Epitalon before bed. Said the day-watch plan was Nootropil + B-300.
Reading the record: Both the percentage and temperature are approximate self-reports. The post does not state the temperature unit. The day-watch stack is prospective wording, and the block percentage is not a whole-day sleep total.
Original @PepMariner post ↗Lower perceived strain for similar work
Work context: No break between boarding and starting cargo operations.
After roughly 30 days of observations, described the median wearable “strain” number as trending down for work he considered similar. Tentatively attributed much of this to Bemitil, comparing the experience with earlier Bromantane-only use.
Reading the record: No numeric median, paired workload measures or late-October export accompany the text. This is a hypothesis about a trend, not a calculated effect. Cargo timing and the wider stack are part of the comparison.
Original @PepMariner post ↗A reported 70% restorative sleep block
Work context: Sleep before the day watch on the late-October hitch.
Reported a personal high of 70% restorative sleep, intranasal Epitalon before sleep, and B-300 + Nootropil for the day watch.
Reading the record: 70% is the posted wearable percentage, not a recomputed export value. Without the block duration, it cannot be converted into deep/REM minutes or compared as a daily sleep total.
Original @PepMariner post ↗Dates and data coverage
Reviewed 2026-11-01. This page uses selected public posts, including the full September 21 and September 29 recaps. Search results are not a complete account archive. A work-related retrospective does not confirm the author was aboard on its publication date; no continuous voyage dates are inferred between posts.
The WHOOP analysis contains exported sleep through October 10. The late-October diary is a separate set of posted observations. Its percentages have not been added to the raw-data graph, and no missing sleep durations, stage minutes, strain medians or exposure dates have been filled in.
Personal observations are separate from published maritime research. Multiple compounds, workload, weather and sleep opportunity changed together.