Scientific context only. Not medical advice, not a recommendation to use.
At a glance
Synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from the pineal extract epithalamin (V. Khavinson, St. Petersburg). Investigated in the Russian research and anti-ageing context; Western controlled trials are largely absent. No medicines approval in EU or US.
Researched for
Anti-aging markers in animal studiesTelomerase activity in vitroSleep regulation in Russian pilot studies
Official status
US: Unapproved
No FDA approval. Sale as 'research chemical' or 'dietary supplement' is not legally covered.
Postulated mechanisms include modulation of gene expression in pinealocytes, telomerase activation (observed in cell culture studies) and influence on melatonin synthesis. A defined primary receptor is not established; the mechanistic basis rests on in-vitro and animal data from the Khavinson group.
02
Evidence at a glance
Reading note. The distribution shows on which evidence tier each observation sits. Strong colours mark stronger evidence — weaker tiers are deliberately visible, not hidden.
4 observations · 4 tiers
Human trial
1
Animal model
1
In vitro
1
Anecdotal
1
03
What the studies show
In vitro
Zellkultur
Khavinson VKh. et al. 2003
Activation of telomerase in human somatic cells reported in an in-vitro study by the Khavinson group
What does NOT follow: In-vitro observation; translation to the intact human organism is not supported by RCT. Independent replication absent.
Animal model
Maus
Lifespan extension and altered tumour incidence in aged mice reported in Russian animal experiments
What does NOT follow: Exclusively from the Khavinson group; methodological standards are critically discussed in Western literature. Replication outside Russia not available.
Human trial
Mensch
Change in melatonin rhythm markers in older volunteers in a Russian pilot study
What does NOT follow: Small sample, no Western peer review.
Anecdotal
—
Claimed general anti-aging effects in humans are not supported by controlled trials
What does NOT follow: Systematic evidence assessment by Western reviews and databases (Cochrane, NIH) reaches the same conclusion: claims far exceed the data.
04
Where studies disagree
Open question
Are the Khavinson findings independently replicable?
POSITION A
The Khavinson group has consistently published positive findings on tetrapeptide effects for decades.
POSITION B
Independent replication outside Russia is absent; Western research groups have not picked up the concept.
CURRENT STATE · The absence of independent replication is a central point of skepticism; until Western replication is available, the Khavinson findings are not established science.
05
Pharmacokinetics
Theoretical concentration curve at a half-life of 0.3 h. Pure pharmacokinetic model — not a dosing recommendation.
Which routes of administration the available studies describe — neutral reporting, not a usage guide.
Intramuscular
In Russian studies administered predominantly as IM injection in cycles.
Intranasal
Intranasal formulations also described.
07
Known adverse events from studies
Factual reporting of what studies observed. Not a safety statement for individual use.
Anecdotal
Safety profile inadequately documented
Western pharmacovigilance absent; Russian data not systematically captured in international databases.
07b
Interactions & combinations
Documented interactions and contraindications from studies, prescribing information and guidelines. Where no data exists, this is stated.
Reporting of risks, NOT a combination guide. The absence of an entry does not mean „safe to combine“ but „not sufficiently studied“.
No documented interactions recorded
We have not yet found robustly documented interactions for this peptide. This does NOT mean none exist — the data is limited.
08
Risks & hygiene aspects in the literature
What regulatory and scientific literature reports on risks, sterility and identity in non-pharmaceutical sources — descriptive, not a hygiene guide.
Evidence gap
The gap between marketing claim strength and study evidence is particularly large for epitalon. Western reviews consistently classify the evidence as insufficient.
10
Anecdotal observations
Weakest evidence tier — not supported by studies
Reading note. This section gathers popular claims from communities and forums. They are explicitly marked as weakest-tier evidence. Unblinded self-reports are particularly prone to placebo, recall and confirmation biases.
Why no amounts or protocols are listed here. We deliberately show only WHAT communities report — not in what amount or how it is used. Anecdotal "doses" or "biohacker protocols" are neither verified nor standardised nor safe; publishing them would be a usage guide, which we do not provide on principle. Specific amounts belong in a conversation with a doctor, not in a forum.
Lifespan extension and anti-aging effects are portrayed as established in forums and on black-market sites.
widespread in longevity and bio-hacking communities
Not supported by studies: These claims rest predominantly on animal and in-vitro studies from a single research group. Controlled human trials with longevity or functional endpoints do not exist.
Improved sleep and 'rejuvenating' subjective effects are described in user reports.
common in experience forums
Not supported by studies: Self-reports without blinding or control. Given the short plasma half-life and unclear mechanism of action, placebo effects are plausible explanations.
11
Legal status by country
Country
Status
Note
Checked
RU
Research only
Used in Russia within clinical research; no approval as a regular medicine comparable to Western standards.
2026-05-22
United States
Unapproved
No FDA approval. Sale as 'research chemical' or 'dietary supplement' is not legally covered.
2026-05-22
Germany
Unapproved
No EMA approval. Not marketable as a medicine.
2026-05-22
12
Reconstitution calculator
Pure mg/mL maths — works like a calculator. Not a usage recommendation.
Peptides ship as a dry powder. Once dissolved in a liquid (reconstitution), this calculator answers a single question: how much substance is in one millilitre of solution afterwards?
1Enter the vial's substance amount (printed on the label).
2Enter how much solvent you add.
3Result = concentration in mg per mL.
Printed on the label
/
Liquid you add
=
2.50
mg / mL
5 mg in 2 mL gives 2.50 mg/mL — each millilitre contains 2.50 mg of substance.
14
Study register
In vitro
Khavinson VKh. et al. · 2003
Peptide promotes overcoming of the division limit in human somatic cell