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Epithalon (Epitalon): Dosage, Evidence and Where the Claims Come From

A four-amino-acid peptide carrying some of the largest claims in the category, resting on a research base almost entirely from one Russian group.

Written and fact-checked by the Good Supplements research team7 min readUpdated October 26, 2026
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The short version

  • Both spellings are the same compound. Epithalon and epitalon are the same four amino acids, Ala-Glu-Asp-Gly, and the search volume splits roughly two to one.
  • The evidence traces to one research group, largely Vladimir Khavinson's work in St Petersburg across several decades.
  • The telomerase claim is the headline and the hardest to verify. Independent replication outside that group is sparse.
  • Circulating protocols are typically 5 to 10mg daily for 10 to 20 days, cycled. Those come from community practice, not dose-finding trials.

The two spellings

Start here because it affects what you find. Epithalon and epitalon are the same molecule. So is Epitalon's longer relative epithalamin, which is a peptide extract rather than the synthetic tetrapeptide.

Google treats the two spellings as separate terms, and the volume splits roughly two to one in favour of epithalon. If you are researching this compound, search both, because different sources use different spellings and you will miss half the material otherwise.

What it is

BioLongevity Labs Epithalon (20mg)

BioLongevity Labs

Epithalon (20mg)

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Epithalon is a synthetic tetrapeptide: four amino acids, alanine-glutamate-aspartate-glycine, usually written Ala-Glu-Asp-Gly or AEDG.

It was developed as a synthetic version of epithalamin, an extract of the pineal gland. The underlying idea was that pineal peptides regulate ageing processes, and that a defined synthetic sequence could reproduce the effect of the extract.

Of the vendors we review, only BioLongevity Labs stocks it, at 20mg.

Where the research actually comes from

This is the part most pages about epithalon leave out, and it is the most important thing to understand before reading any claim about it.

The great majority of the published work comes from Vladimir Khavinson and colleagues at the St Petersburg Institute of Bioregulation and Gerontology, across roughly four decades. That body of work includes animal lifespan studies, cell culture work on telomerase, and some human observational data.

A research programme concentrated in one group is not automatically wrong. It is, however, a different evidence situation from a compound replicated independently across many labs. Independent replication of the central telomerase findings outside that group is sparse, and that gap is the honest headline here.

The claims, graded

Taking them in the order people encounter them.

ClaimEvidenceOur readBuy
Activates telomerase, lengthens telomeresCell culture work, largely from one groupThe headline claim and the least independently replicatedShop
Extends lifespanRodent studies from the same programmeAnimal data. No human lifespan evidence exists for any compound
Normalises melatonin and sleep rhythmPineal-axis rationale plus some human observationMechanistically coherent, thin human data
Antioxidant and immune effectsAnimal and in vitroPlausible, not specific to this compound

What each epithalon claim actually rests on

The dosing figures in circulation

Every number below comes from community protocols and vendor literature rather than from published dose-finding work. We publish them because people search for them, and we label them because the distinction matters.

The common pattern is 5 to 10mg daily for 10 to 20 consecutive days, run once or twice a year rather than continuously. The cycled approach reflects how the original research was structured, with courses rather than ongoing use.

A 20mg vial therefore covers a short course at the higher end or two at the lower. Our calculator converts a chosen figure into syringe units, and our reconstitution guide covers the mechanics.

What nobody can tell you

Longevity claims have a structural problem that applies to epithalon more than almost anything else: you cannot assess them on a personal timescale. There is no marker you can check next month that tells you whether a lifespan effect happened.

That makes the compound unusually resistant to the normal feedback loop, where you try something and judge it. It also makes it unusually easy to sell. Both things are worth sitting with before spending money on a course.

Our are peptides safe page covers the broader risk picture, and everything referenced here is sold for research use only. Nothing on this page is medical advice.

Before you go

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Products referenced in this piece

Read the full brand review, or go straight to the vendor to buy.

Top pick
BioLongevity Labs Epithalon (20mg)
BioLongevity Labs

Epithalon (20mg)

Lyophilized vial

Price$94.97
Claims we verified3/3
BioLongevity Labs MOTS-c (10mg)
BioLongevity Labs

MOTS-c (10mg)

Lyophilized vial

Price$109.97
Claims we verified3/3

We may earn a commission if you buy through links on this page, at no extra cost to you. It never changes a grade or a ranking. How we grade.

Common questions

A synthetic tetrapeptide of four amino acids, Ala-Glu-Asp-Gly, developed as a defined version of the pineal extract epithalamin. It is also spelled epitalon, and both refer to the same compound.

This article is educational and reflects published research and vendor policies as of October 26, 2026. It is not medical advice, and nothing here recommends using a research chemical outside its stated purpose. Talk to a doctor or pharmacist before starting any supplement, especially if you are pregnant, nursing, managing a chronic condition, or taking prescription medication.

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