Epithalon
Low EvidenceA tetrapeptide studied for its potential to activate telomerase and influence biological aging markers.
What It Is
Epithalon (also spelled Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) based on the natural peptide epithalamin, produced by the pineal gland. Research, primarily from Russian laboratories, has explored its potential to activate telomerase, the enzyme responsible for maintaining telomere length. A 2025 study published in PMC confirmed that Epitalon increases telomere length in multiple human cell lines through both telomerase upregulation and alternative lengthening of telomeres (ALT) activity — providing important independent confirmation of Khavinson's original findings. Epithalon is now understood to act on five hallmarks of aging: telomere maintenance, epigenetic regulation, oxidative stress resilience, immune recalibration, and circadian rhythm restoration. In 2026, Epithalon is increasingly studied as part of longevity combination protocols alongside NAD+ and MOTS-c, with researchers targeting multiple aging pathways simultaneously — telomere maintenance (Epithalon), cellular energy (NAD+), and metabolic fitness (MOTS-c). Epitalon is scheduled for PCAC review on July 24, 2026, alongside Emideltide and Semax, to evaluate whether it can be legally compounded under section 503A. Public comments via docket FDA-2025-N-6895 are accepted until July 22, 2026.
Regulatory Status
Moved from Category 2 back to Category 1 per HHS announcement February 27, 2026. FDA PCAC will review Epitalon (free base and acetate) on July 24, 2026 for potential 503A Bulks List inclusion. Public comment docket FDA-2025-N-6895 open until July 22, 2026.
Effective: February 2026
View FDA SourceEvidence Snapshot
| Study Type | Model | Outcome | Link |
|---|---|---|---|
| In vitro (2025) | Multiple human cell lines — telomere length assays | Confirmed telomere lengthening through both telomerase upregulation and ALT activity — independent replication of original Khavinson findings | Source |
| Animal (rat) | Aging rodent lifespan study (Khavinson lab) | Extended mean lifespan; reduced spontaneous tumor incidence; improved immune markers | Source |
Commonly Discussed Benefits
Safety & Cautions
- Most research from a single laboratory group
- Limited independent replication of results
- No human clinical trials registered in Western databases
- Claims about lifespan extension remain unverified in humans
Comparisons
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