Epitalon is a synthetic pineal tetrapeptide with a development status of "preclinical / limited foreign trials". The Institute rates the strength of its published evidence as limited. A tetrapeptide studied primarily in Russian longevity research; Western replication remains minimal.
Commercial availability of Epitalon continues to run ahead of its regulatory status. That is the recurring structural feature of this market: demand arrives when trial data is published, and supply arrives from channels that answer to nobody in particular.
The practical consequence for buyers is that a headline about promising results tends to be followed within weeks by a wave of new sellers, and the quality of that wave is not correlated with the quality of the science that prompted it.
The Institute has independently tested 1 Epitalon sample from 1 company. 0% met their label claims on purity and content. Measured purity ranged from 93.7% to 93.7%, averaging 93.7%. Every specimen is published in full, including the laboratory that ran it.
The Peptide Institute is an independent research institute. We do not sell products, we do not accept vendor sponsorship, and we publish results that reflect badly on companies as readily as results that do not.
