Peptide guide

Epitalon

Epithalon, AEDG — a synthetic pineal-derived tetrapeptide studied for telomerase activation, circadian rhythm, and aging.

Epitalon is a lab-made four-amino-acid peptide modeled on a fragment of a pineal-gland extract, studied mainly for telomere lengthening, melatonin rhythm, and aging. Most of the research is older Russian work from a single institute, much of it small and unblinded, and it isn’t FDA-approved for anything. A 2025 independent lab did replicate the telomere finding in human cells, the first real outside check on the central claim. People still run it in short courses, so the practical questions are how to prepare it correctly and how to tell a real source from a scam.

By the Zapify Research team

Reviewed against 11 clinical & research sources · Updated June 2026 · Educational use only

Type: 4-aa peptideAEDG tetrapeptide
Route: Subcutaneous
Typical dose: 5–10 mg/dayin short courses
Cycle: 10–20 day coursemonths between
Storage: Mixed: 2–4 wksSealed: months
Status: Not FDA-approved

What is Epitalon?

A lab-made four-amino-acid peptide (AEDG) modeled on a pineal-extract fragment — not FDA-approved, with most headline human data drawn from the crude extract, not this synthetic version.

Epitalon is a peptide, a short chain of amino acids, the same building blocks that make up every protein in your body. This one is unusually small: four amino acids, alanine-glutamate-aspartate-glycine, which is why you’ll also see it written as AEDG. The molecule is about as simple as a peptide gets.

It traces back to the pineal gland. A Russian researcher, Vladimir Khavinson, and his team at the St. Petersburg Institute of Bioregulation and Gerontology were studying a bovine pineal extract called epithalamin and identified this four-amino-acid sequence as the active piece. Epitalon is the synthetic version of that fragment, built in a lab rather than pulled from tissue.

That origin matters when you read the research, because the two aren’t the same thing. A lot of the headline human longevity data was collected on epithalamin, the crude pineal extract, not on the clean synthetic tetrapeptide people inject today. The names get used interchangeably online; the molecules are related but not identical, and the evidence doesn’t transfer cleanly from one to the other.

Epitalon isn’t FDA-approved for anything. The strongest evidence is from cell and animal studies, the human data is thin and comes almost entirely from one Russian institute, and the FDA had placed it on a list of compounding peptides with possible immunogenicity and impurity concerns before removing it from that list in April 2026 pending a separate safety review. Treat it as an experimental research compound, not a proven medicine.

What is it studied for?

Most research is in cells and animals from a single Russian group, though a 2025 Brunel University team independently replicated the telomere-lengthening finding in human cells.

Most of this research was done in cell cultures and animals, and a large share of it came from a single group around Khavinson over several decades. The human work that exists is small and mostly unblinded. So “studied for” leans heavily on dishes and rats, and that sits under every claim below.

Evidence base, by subject

ManyCell & animal studies

A few, smallControlled human trials

The research has clustered in three areas:

Telomeres & telomeraseThe signature claim. In human cells, Epitalon raised telomerase activity and lengthened telomeres, the protective caps on chromosomes that shorten as cells divide.

Circadian rhythm & melatoninTied to its pineal origin. A small trial reported higher nighttime melatonin and shifted clock-gene expression, which is why sleep often comes up.

Aging markers & lifespanIn rodents and other models, reduced chromosomal damage and, in some regimens, longer lifespan and fewer leukemias. Results varied by protocol.

The telomere finding got its first real outside check in 2025, when a team at Brunel University London, independent of Khavinson, exposed normal human epithelial and fibroblast cells to Epitalon for three weeks and saw telomere length increase through telomerase. That replication strengthens the in-vitro case. How a peptide this small reaches the cell nucleus and switches on the telomerase gene is still being worked out, and whether any of this translates to a living human body is the open question, not a settled one.

Why people use it

People run it for longevity, telomeres, and sleep, but no placebo-controlled human trial shows it slows aging, and much of the human data used the pineal extract.

People who try Epitalon tend to come at it from the longevity side rather than chasing a specific injury. These are the reasons they reach for it, not evidence that it delivers:

An interest in the aging process itself, drawn to the telomere story as a mechanism that targets something upstream of any single symptom.
Sleep and circadian trouble, where the pineal and melatonin angle makes it feel relevant.
A general “healthspan” experiment, often run alongside other longevity habits like exercise, fasting, or sleep work.
Curiosity about the long-running Russian gerontology research, which is unusual in that it followed people for years rather than weeks.

No rigorous, placebo-controlled human trial has shown Epitalon will slow aging or extend life. What’s there is a consistent cell-level signal, now replicated once by an independent Western lab, a plausible mechanism, and decades of observational human data, with the catch that much of that data used the pineal extract rather than the synthetic peptide and wasn’t blinded. It’s worth being curious about. It isn’t enough to rely on, and it won’t replace the things that actually have evidence behind them for aging well: sleep, training, and diet.

How to reconstitute Epitalon

Mix a 10 mg vial with 2 mL bacteriostatic water for 5 mg/mL, so 20 units on a U-100 syringe is 1 mg and 100 units is 5 mg.

Your vial arrives as a small puck of dry powder. Before you can use it, you mix it into a liquid. That step is called reconstitution, and it’s the same process used for most research peptides.

Step 1Start with powderWipe the rubber stopper with an alcohol swab.

Step 2Add bac. waterRun it slowly down the inside wall — never shake.

Step 3Draw your doseThe calculator gives the exact units to draw to.

Wipe the rubber stopper with an alcohol swab first, every time.
Use bacteriostatic water, not plain sterile water and not saline. The trace of benzyl alcohol in it holds back bacteria, which matters if you’ll be drawing from the same vial across a multi-day course.
Add the water slowly, running it down the inside glass wall. Don’t blast it straight onto the powder.
Don’t shake it. Swirl gently and let it dissolve on its own. Shaking foams the solution and can damage the peptide.

A common setup is a 10 mg vial mixed with 2 mL of bacteriostatic water, which gives 5 mg/mL. On a U-100 insulin syringe, 20 units is then 1 mg and 100 units is 5 mg. The water doesn’t change how much peptide is in the vial; it only sets the concentration, which decides how many units you draw. More water means a more dilute mix and a bigger draw for the same dose. You can’t ruin it with too much or too little, you only change the draw math, and that’s exactly what the calculator handles.

Calculate your exact Epitalon reconstitution →

Dose & units

No dose is FDA-approved; the most-reported use is 5–10 mg daily run as a short 10–20 day course, repeated only two or three times a year.

There is no FDA-approved dose for Epitalon. Everything below is a range that clinics and write-ups report, not a medical standard. The numbers also vary widely source to source, which tells you how soft they are. Decide what goes into your body with a licensed provider, not with this page.

Typical range

Injected under the skin, the dose reported most often is 5–10 mg per day, usually taken in the evening to line up with the melatonin and sleep angle. Some protocols use lower daily doses and longer runs; others use higher doses every other day.

Course length

Epitalon is run as a short course, not something taken continuously. The common pattern is a 10- to 20-day run, with a frequently cited version being 10 mg daily for 10 days or around 5 mg daily for 20 days.

Cycling

After a course, sources describe a long gap before repeating, commonly several months, with the course run two or three times a year rather than back to back. The wide spacing is part of why people frame it as a periodic reset rather than a daily supplement.

Course10–20 days

Offmonths

For the exact mark to draw to on your insulin syringe, don’t eyeball it. The calculator turns your vial size, water, and dose into the precise number of units.

Get your exact units →

Storage

Sealed powder keeps for months at room temperature; once mixed, refrigerate at 2–8 °C and use within about 2–4 weeks, though a course often finishes inside that window.

Sealed & drySealed dry powder stays stable for months at room temperature and shrugs off shipping heat.

ReconstitutedRefrigerate at 2–8 °C in the main compartment, use within about 2–4 weeks; don't freeze, keep out of light, and toss if cloudy.

You’ll see longer windows quoted for peptide vials. Those figures are beyond-use dates for a sealed, unmixed vial that a compounding pharmacy has stability-tested, and they stop applying the moment you add water. A mixed vial runs on the shorter clock instead, because that’s how long the preservative in bacteriostatic water reliably keeps the solution clean once you’re drawing from it. With Epitalon this matters less in practice, since a course often finishes inside that window anyway.

That limit is about contamination, not potency — the peptide itself often stays good well beyond it. Reconstitute with plain sterile water instead of bacteriostatic and you drop to a day or two, since there’s no preservative holding bacteria back.

Don’t freeze a reconstituted vial, keep it out of direct light, write the mix date on the label, and throw it out if the solution ever turns cloudy or discolored, whatever the date says.

Side effects & safety

Reported effects are mild — injection-site irritation, drowsiness, vivid dreams — but long-term human safety data is scarce, and anything touching telomerase warrants a cancer-history conversation with a doctor.

The reported side effects are generally mild. That picture comes from animal studies and small, mostly Russian human trials, not large modern safety studies, so hold it loosely.

Most common: mild, short-lived redness, swelling, or irritation at the injection site.
Less often: drowsiness or vivid dreams, in line with the melatonin and sleep angle, and occasional mild headache or fatigue.

The deeper issue isn’t a long list of reactions, it’s how little long-term human safety data exists. There’s no formal toxicology, carcinogenicity, or drug-interaction testing of the kind a real medicine carries, and the FDA had previously named it among compounding peptides that may provoke an immune reaction before removing it from that list in April 2026 for a separate review. Anything that touches telomerase, the enzyme cancer cells also use to keep dividing, deserves a real conversation with a doctor first, especially if you have a cancer history, are pregnant or breastfeeding, or manage a serious condition. The theoretical cancer concern is unproven in either direction, and the animal work that exists actually leaned protective, which is exactly why it’s worth a careful look rather than a flat dismissal.

For competitors, Epitalon is not specifically named on the WADA Prohibited List, which sets it apart from peptides like BPC-157 and TB-500. But WADA’s S0 category bans any substance with no current regulatory approval for human use, and since Epitalon isn’t approved anywhere, that catch-all could arguably reach it. Anyone subject to testing should check the current list and their sport’s rules rather than assume it’s clear.

And the biggest risk here isn’t really the molecule. It’s whether what’s in the vial is actually Epitalon, at the strength on the label. That comes down to where you buy it.

How to vet a source

A tiny four-amino-acid sequence is cheap to fake and invisible in powder, so insist on a batch-specific third-party COA with a lot number matching your vial.

This is an unregulated market, and a real share of independently tested vials come back underdosed, impure, or not even the compound on the label. With a tiny four-amino-acid peptide like this one, a wrong or sloppy sequence is cheap to pass off and impossible to see in the powder. Where you buy matters more than almost anything else here. The one document that separates a real seller from a gamble is a certificate of analysis: a third-party lab’s report on what’s actually in the vial.

A real COA shows

An identity test (usually mass spectrometry) confirming the peptide is what the label says.
A purity figure from HPLC, typically 98% or higher.
A lot or batch number that matches the number printed on your vial.
A named, independent accredited lab and a recent test date.

Walk away if

There’s no COA, or it’s a generic image with no lot number.
The “certificate” comes from the seller instead of a third-party lab.
The lot number doesn’t match your vial, or there isn’t one at all.
It’s a flat image you can’t trace back to the lab that issued it.

That’s the standard worth holding any seller to, ours included. Ask for the batch-specific COA before you buy, match the lot number to your vial, and don’t accept a screenshot in place of a traceable report.

See the Zapify compound catalog →

Common questions about Epitalon

Is Epitalon approved or proven to work in people?

No. It isn’t FDA-approved for any use, and there are no large, rigorous, placebo-controlled human trials behind the anti-aging claims. The strongest data is from cell and animal work. The often-cited human longevity studies were small, unblinded, run mostly by one Russian institute, and several used the pineal extract epithalamin rather than the synthetic Epitalon people inject today.

Epitalon and epithalamin — are they the same thing?

Related, not identical. Epithalamin is a crude bovine pineal-gland extract; Epitalon (AEDG) is the synthetic four-amino-acid peptide identified as its active fragment. A lot of the human longevity data was collected on the extract, so it doesn’t transfer cleanly to the clean synthetic peptide. The names get used interchangeably online, but the molecules and their evidence aren’t the same.

Does Epitalon actually lengthen telomeres?

In cell cultures, the evidence is reasonably consistent: it raised telomerase activity and lengthened telomeres in human cells, and a 2025 independent lab at Brunel University London replicated that finding outside Khavinson’s group for the first time. What that means for telomeres in a living human body, and whether longer telomeres translate to a longer or healthier life, is unproven. The cell data is real; the human payoff is the open question.

Why is it taken in short courses instead of daily?

The common protocols run it for 10 to 20 days and then leave months before repeating, often two or three short courses a year. That pattern comes from the original Russian regimens rather than from dose-finding trials, so treat the schedule as convention, not a proven optimum. The numbers vary widely between sources, which itself tells you how soft they are.

Is Epitalon banned for athletes?

It’s not specifically named on the WADA Prohibited List, which makes it different from BPC-157 and TB-500, both of which are banned. But WADA’s S0 category prohibits any substance with no current regulatory approval for human use, and Epitalon isn’t approved anywhere, so that catch-all could arguably apply. Anyone subject to drug testing should check the current list and their sport’s rules rather than assume it’s permitted.

References

This page is for research and educational purposes only. It is not medical advice or a recommendation to use any compound. The dose ranges shown are reported by clinics and research literature, not validated medical standards, and Epitalon is not FDA-approved. Talk to a licensed medical provider about anything you put in your body.