About Epitalon
Epitalon is a synthetic tetrapeptide originally derived from epithalamin extracts. Research interest centers on telomere length, melatonin rhythms, and sleep architecture in aging models.
Longevity
Epitalon
Pineal Tetrapeptide
A synthetic tetrapeptide studied for telomerase activation and circadian regulation.
PreclinicalResearch use only
Where to buy
Vendor offerings
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Best $/mg
Atomik LabzTestedCAPSULES – Epithalon 3mg x 90 Capsules
EVERYDAY25$119.00
$39.67/mg · 3mg
Solution PeptidesTestedCAPSULES – Epithalon 3mg x 90 Capsules
EVERYDAY15$119.00
$39.67/mg · 3mg
Evidence level
Preclinical only
A synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from bovine pineal extracts. Researched primarily in Russian gerontology literature for telomerase activation, circadian regulation, and lifespan effects in aged models.
Mechanism
Reported to upregulate telomerase activity and modulate pineal function.
Researched benefits
Telomerase activation (in vitro)
Epitalon increased telomerase activity and extended telomere length in cultured human somatic cells (Khavinson and colleagues, multiple papers). Effect size in vitro is real but modest, and translation to in-vivo human telomere dynamics has not been independently replicated.
Melatonin and circadian normalization
Long-term administration in aged macaques and humans was reported to restore a youthful nocturnal melatonin profile and improve sleep architecture. Most data is from the St. Petersburg Institute of Bioregulation and Gerontology.
Lifespan extension in rodents
Multiple Russian cohorts of aged mice and rats showed extended mean and maximum lifespan with periodic Epitalon administration. Effect sizes range 10–30%. These have not been reproduced by Western labs at the same magnitude.
Tumor suppression signal (mixed)
In some carcinogen-induced mouse models, Epitalon reduced spontaneous tumor incidence. Given telomerase activation, the opposite effect would be plausible; the resolution to this apparent paradox is unclear.
Risks & cautions
- high
Reproducibility concerns
The bulk of efficacy data comes from a single research group over decades. Western replication is sparse. This does not mean the findings are wrong, but it does mean the confidence interval is wide.
- moderate
Theoretical tumor risk
Telomerase activation is a hallmark feature of most cancers. Activating telomerase systemically in adult humans has uncharted long-term risk despite the conflicting animal data.
- low
Injection-site reactions
Standard subcutaneous risks: erythema, transient soreness, bruising.
Dosing
5–10 mg subcutaneously, once daily for 10–20 consecutive days, repeated 1–2 times per year.
- Conservative
- 5 mg/day × 10 days, once yearly
- Standard
- 10 mg/day × 10 days, twice yearly
- Aggressive
- 10 mg/day × 20 days, twice yearly (uncommon)
Vial sizes
10mg / 20mg
Half-life
Short
Route
subcutaneous
Reconstitute with bacteriostatic water. Half-life is short — daily dosing during the cycle window is preferred over depot or extended-interval schedules. The peptide is unstable at room temperature once reconstituted; refrigerate.
Contraindications
- Active or recent malignancy
- Pregnancy or breastfeeding — no data
- Strong family history of telomerase-positive cancers
In depth
Background
Epitalon is the synthetic four-amino-acid form (Ala-Glu-Asp-Gly) of Epithalamin, a pineal extract characterized by Vladimir Khavinson's group in Leningrad in the 1980s. The Russian peptide bioregulator school proposed that short peptides could serve as tissue-specific transcriptional cues, and Epitalon became their best-known longevity candidate.
The peptide is structurally unremarkable. Its interest lies entirely in the claimed downstream biology: pineal modulation, melatonin restoration, and telomerase activation.
Mechanism in depth
Two pathways are proposed, neither fully characterized:
- Pineal modulation. Epitalon appears to restore age-related declines in pineal melatonin output, possibly by acting as a transcriptional regulator at pinealocyte chromatin. The effect is most pronounced in aged animals with already-blunted melatonin rhythms.
- Telomerase upregulation. In cultured human fibroblasts, Epitalon increased TERT expression and added population doublings. The mechanism — direct binding to TERT promoter regions has been proposed but not conclusively demonstrated.
Khavinson's broader thesis is that short peptides bind DNA in sequence-specific ways and act as endogenous transcription factors. This is a strong claim that mainstream molecular biology has not adopted.
Human evidence
The strongest human dataset comes from Korkushko 2006, a 12-year follow-up of elderly subjects receiving cyclic Epithalamin or Epitalon. Reported endpoints: reduced all-cause mortality, normalized circadian markers. The trial was open-label and the cohort small by Western standards.
A handful of smaller open-label studies in retinopathy and cardiac patients report symptomatic improvements. None are placebo-controlled to modern standards.
Animal evidence
Repeatedly positive in Russian and a few Eastern European rodent cohorts:
- Extended median and maximum lifespan in CBA and SHR mice.
- Reduced spontaneous tumor incidence in some strains.
- Improved aged-macaque melatonin profiles.
The reproducibility question is real. Western longevity labs have not run head-to-head replications.
Stack synergy
Frequently paired with:
- Thymalin / Thymulin — the other classic Khavinson bioregulator, targeting thymic involution.
- MOTS-c — both target longevity programs through different mechanisms.
- Melatonin — overlapping circadian rationale; one may make the other redundant.
Avoid stacking with anything that activates telomerase by an unrelated mechanism (TA-65 / cycloastragenol) if the concern is tumor risk — additive telomerase activation has no upside.
Open questions
- Does Epitalon actually extend telomeres in living humans, or only in cell culture?
- Is the lifespan effect in rodents real at the magnitude reported, and does it require the pineal to be intact?
- Why would a telomerase activator reduce tumor incidence? Is there a tissue-selective mechanism, or a flaw in the original study designs?
- What is the durable benefit half-life of a 10-day cycle? The protocols are essentially traditional rather than empirical.
References
- 1.Khavinson V.K. et al. — Peptide promotes overcoming of the division limit in human somatic cell (Bull Exp Biol Med, 2004)
- 2.Khavinson V.K. — Peptides and Ageing (Neuro Endocrinol Lett, 2002)
- 3.Anisimov V.N. et al. — Effect of Epitalon on biomarkers of aging, life span and spontaneous tumor incidence in female SHR mice (Biogerontology, 2003)
- 4.Korkushko O.V. et al. — Geroprotective effect of epithalamine and Epitalon peptide preparations in elderly subjects (Bull Exp Biol Med, 2006)