Longevity Bros
Home › Research library › Epithalon
Research library

Epithalon — dosing protocol, the 10-day course and what to expect

Epithalon is different from almost everything else in this library: it is not run week after week. It is a short course — ten days — inside a twelve-week cycle, then nothing until the next one. The research interest is sleep and circadian rhythm, telomerase-related longevity signalling and recovery. This page gives the house course on the 20 mg pen, day by day.

Reviewed by the Longevity Bros team · Updated 1 October 2026

Before you read onThis is research and educational information for adults, not medical advice. Every dose on this page comes from the Longevity Bros house dosing sheets; it is a general reference, not a prescription. Get baseline labs before anything, and review any protocol with your own physician — they have the final word. Longevity Bros offers coaching and written research protocols only — we do not sell, supply, source or ship any compound.

What Epithalon is and what it is studied for

Epithalon (epitalon) is a synthetic tetrapeptide modelled on epithalamin, a pineal-gland extract. It is studied for three things: influence on the melatonin and sleep-wake rhythm, longevity signalling researched in relation to telomerase activity, and general recovery. It is the compound people reach for after jet lag, a long travel block or burnout — to reset, not to push harder.

The research rationale behind the telomerase signalling is periodic exposure, not continuous use, which is why the house protocol is a defined ten-day course and then a genuine stop. Nothing dramatic happens day to day, and that quiet is exactly what tempts people to keep going; most of the work with epithalon is restraint.

Who it suits — and who should not run it

Written for adult women and men who want a periodic sleep and recovery reset and will run a sleep tracker through the cycle, because the course is judged on sleep architecture rather than a lab number. The house exclusions:

Not for

The house protocol

The 20 mg pen holds 300 clicks at 66.7 mcg per click. Every dose is subcutaneous in the abdomen, in the evening 1–2 hours before bed, every night for ten days. Days 1–2 are a low start while the body responds; days 3–10 are the full course dose. From week 3 to week 12 there is no epithalon at all — not a gap to fill with something else, but the point of the protocol.

PenDose per injectionClicksFrequencyTimingCycle
Epithalon 20 mg (66.7 mcg/click)1.0 mg15NightlyEvening, 1–2 h before bedDays 1–2 — low start
Epithalon 20 mg2.0 mg30NightlyEvening, 1–2 h before bedDays 3–10 — full course dose
—None0——Weeks 3–12 — off; sleep tracking continues
Alternative: Epithalon 20 mg1.0 mg15NightlyEvening, 1–2 h before bed20-day course (roughly weeks 1–3), then off

Course total: 270 clicks → 1 pen. About 30 clicks (2 mg) remain and are discarded — epithalon is not carried over into a second course. The alternative 20-day shape at 15 clicks a night uses exactly 300 clicks, the whole pen; both shapes sit inside the general research window of 0.5–3 mg a day over 10–20 days. Pick one; do not combine or extend them.

Once the course ends, the pen goes back in the fridge and is not touched again until the next cycle. The earliest a new course can start is the next twelve-week cycle.

Week by week — what people typically notice and when

WhenWhat is typically reported
Days 1–2Low dose, settling in. Vivid dreams or mild drowsiness in some people — expected, and a cue for an earlier bedtime rather than a problem.
Days 3–6Sleep onset and depth typically start shifting — easier to fall asleep, more deep sleep on the tracker.
Days 7–10Effect steady through the rest of the course.
Weeks 2–6 (post-course)The notable part: the sleep and energy effect tends to persist for weeks after the course ends, not just during it.
By week 12A slow return toward baseline. That drift is the signal, not a failure — it is what tells you the next course, next cycle, is due.

Normal training throughout, slightly lighter on days 1–3 if drowsiness shows up. Magnesium in the evening and no screens before bed meaningfully compound the effect the compound is researched for. No alcohol during the ten days — it works directly against the sleep-architecture changes the course is being run for.

Labs we ask for before and during

MarkerWhenWhy it is on the list
Sleep tracker (HRV, deep sleep)Baseline · during the course · week 6The outcome measure — the course is judged on sleep architecture, not a lab number
Full blood countBaselineGeneral baseline before any course
Liver panel (ALT, AST, GGT, bilirubin)BaselineGeneral baseline
Cystatin C (never creatinine alone)BaselineKidney measure not distorted by muscle or creatine
Fasting glucoseBaselineGeneral metabolic baseline
TSHBaselineThyroid — relevant given the circadian and pineal signalling angle
Melatonin / cortisol rhythmBaseline (optional)Directly relevant but not essential to run the course safely
Basic panel repeatWeek 12 (only if stacking)Only when other compounds run alongside the cycle

The tracker comparison — baseline versus course versus week 6 — is the marker that tells you whether the course worked, more than any blood draw. Normal diet during the course; vitamin D, magnesium and omega-3 are the only general supplements.

Stacking: what it pairs with

Epithalon is the ten-day opener to a cycle rather than a compound that runs alongside anything for long. For the tired-and-foggy researcher it pairs naturally with NAD+, which runs twice weekly for eight weeks while epithalon does its ten days at the start; for the one who trains, MOTS-c on training mornings fills the same cycle. Because epithalon works on the melatonin rhythm, it also sits sensibly ahead of a nightly CJC-1295 + Ipamorelin block for the researcher whose sleep is the limiting factor.

Any compound running alongside moves the week-12 basic panel from optional to required. Nothing stacks with epithalon to extend it — the stop at day 10 is the protocol.

Common mistakes

Frequently asked questions

How many clicks is an epithalon dose?

On the 20 mg pen (66.7 mcg per click) the house course is 15 clicks (1.0 mg) on nights 1–2, then 30 clicks (2.0 mg) on nights 3–10. The course uses 270 of the pen's 300 clicks.

How long is an epithalon course and how often can I repeat it?

Ten nights, inside a twelve-week cycle. From week 3 to week 12 there is no epithalon, and the earliest a new course can start is the next cycle. An alternative is 20 nights at 15 clicks, which uses the whole pen.

When should I inject epithalon?

In the evening, 1–2 hours before bed, subcutaneously in the abdomen, every night of the course. Vivid dreams or drowsiness in the first nights are a cue for an earlier bedtime.

What should I expect from epithalon after the course ends?

The sleep and energy effect tends to persist for weeks after day 10 — weeks 2–6 are usually the notable window — with a slow drift back toward baseline by week 12. That drift is the signal that the next course is due.

Which labs do I need for epithalon?

A baseline full blood count, liver panel, cystatin C, fasting glucose and TSH, with a melatonin or cortisol rhythm optional. The real outcome measure is a sleep tracker at baseline, during the course and at week 6.

Your own protocol

Want this written for your body, not the average one?

The personal research protocol (€399, follow-up included) takes your intake, puts it through human review, and returns a short results version plus the full clinical document — then a free coach call on WhatsApp to walk it through and read your labs against the plan.

Build my protocol Book a 15-minute call