Epithalon — Vendor Comparison

A synthetic tetrapeptide studied for its potential to activate telomerase and extend telomere length. Key peptide in longevity research.

Rankings based on our Vendor Transparency Score — COA publishing, lab accreditation, batch traceability, and published policies.See our methodology →

We earn commissions from some vendors below. This doesn't affect our rankings — they're determined by Vendor Transparency Scores alone.Full disclosure →

How We Score Transparency

Public COA AccessCore evidenceCertificates of Analysis visible on site with batch-specific results

Batch TraceabilityCore evidenceCOA batch numbers match product labels and packaging

Named Testing LabCore evidenceTesting lab is named and independently verifiable

Policy PagesSupporting trustDedicated refund and/or shipping policy pages

Identifiable OwnershipSupporting trustNamed founders, registered business, or physical address

Methodology v3.0 · Last updated Mar 14, 2026Full methodology →