Is epitalon the same as SS-31?

No. They are different molecules with different targets, different evidence, and different approval status. Epitalon is a lab-made four-amino-acid peptide based on one from the pineal gland, Ala-Glu-Asp-Gly, with a molecular weight of 390.3 daltons, also spelled epithalon. It is studied for longevity and telomeres by one Russian research group. SS-31 is another name for elamipretide, a peptide aimed at mitochondria, with a molecular weight of 639.8 daltons. It sticks to cardiolipin, a fat in the inner wall of mitochondria. Elamipretide got FDA fast-track (accelerated) approval on September 19, 2025, as Forzinity, for Barth syndrome (a rare inherited disease) in patients who weigh 30 kg or more. That approval does not cover longevity, and it does not turn epitalon into SS-31. Sitting on the same longevity shelf does not make them the same molecule. This site does not rank them. Full records at /compounds/epitalon and /compounds/elamipretide.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of immune and longevity peptides. Thymosin alpha-1, thymalin, epitalon, MOTS-c, humanin, and the bioregulator family.