The Book of Peptides is not a clinic and not your doctor. We do not sell, prescribe, recommend, or personalize any compound, and no grade or ranking here is an endorsement. In the United States, most of these compounds are not FDA-approved and are sold for laboratory research only; a few are prescription drugs, and some are controlled substances or banned in sport. Possessing or administering an unapproved compound outside an authorized setting may be unlawful. Nothing here is a recommendation to buy, possess, or self-administer anything. Consult a licensed physician before any decision involving peptide use.
A synthetic tetrapeptide (Ala-Glu-Asp-Gly) from Vladimir Khavinson's St. Petersburg Institute, proposed to influence pineal function and telomerase activity. Published studies exist, but the overwhelming majority trace to the same originating lab.