Pineal AEDG tetrapeptide
A synthetic pineal-derived tetrapeptide with an intriguing telomerase mechanism — but a human-evidence base that is small, old, and almost entirely from one research group.
✦ 2 min read · 2 sourcesWhat it is
Epitalon (Epithalon; AEDG peptide) is the synthetic tetrapeptide Ala-Glu-Asp-Gly, derived as the proposed active fragment of Epithalamin, a bovine pineal extract. Most human longevity data is on the extract, not the synthetic peptide, and comes from Vladimir Khavinson's group in St. Petersburg.
How it works
The headline claim is telomerase activation and telomere elongation — switching on the enzyme that rebuilds chromosome caps — plus proposed melatonin regulation and antioxidant effects. Most of this is shown in cells or animals; the mechanistic picture is incomplete.
What the evidence shows
Honesty matters most here. Telomere claims rest largely on in-vitro work; a 2025 independent UK lab provided the first outside replication of telomere lengthening in cells. But no controlled human study has measured telomere length before and after. The human longevity data (including a mortality trial) is single-source, decades old, small, and often published only in Russian — and largely unreplicated outside Khavinson's group.
Quick check
Four questions, ~60 seconds, with a sourced result.
The honest take
Intriguing mechanism; human data thin and unreplicated
Status & safety
Not FDA-approved and not legally marketable as a medicine in the US. The extract is approved only in Russia for narrow uses. Synthetic epitalon is sold as a 'research chemical,' outside drug-approval and GMP frameworks — so purity itself is an open question.
Summaries of published, third-party research for educational purposes. Not medical advice; not a claim of efficacy or safety for any use.
New, plain-language summaries as the literature develops. Educational only — no products, nothing for sale.
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