Encyclopedia

Epitalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed in Russia as a synthetic analog of epithalamin, a bovine pineal-gland extract. It is studied in longevity research for reported telomerase activation, telomere maintenance, and circadian/melatonin regulation. Nearly all published research originates from a single Russian research group, and it has not undergone Western-standard randomized controlled trials. It is not FDA-approved.

Epitalon (also spelled Epithalon) was developed by Vladimir Khavinson and colleagues at the St. Petersburg Institute of Bioregulation and Gerontology, based on the active components of epithalamin. It is a short tetrapeptide with sequence Ala-Glu-Asp-Gly (AEDG) and molecular weight ~390.4. Its most-cited mechanism is activation of telomerase (induction of hTERT expression) with reported telomere elongation in human somatic cell cultures, alongside effects on melatonin rhythm and antioxidant systems. Khavinson-group studies in animals and elderly human cohorts have reported geroprotective effects and reduced mortality, but independent Western replication is limited, and the single-group dominance of the literature is a major caveat. Epitalon is among peptides under FDA 503A compounding review.

Mechanism of Action

Reported to activate telomerase by inducing expression of hTERT (the catalytic subunit of telomerase), supporting telomere length maintenance; also reported to normalize circadian/melatonin rhythms and exert antioxidant and neuroendocrine effects. Mechanistic data come largely from in vitro and animal studies.