The Peptide Ledger is written by Troy Snyder, Ed.D., MBA and Kim Snyder. We also co-founded Agape Compounds LLC, a research-use-only peptide vendor. We built this library because most peptide information online comes from anonymous sellers. Every page here cites its sources, grades its evidence, and covers compounds whether or not we sell them. Nothing on this site is medical advice, and nothing here should be read as a recommendation to use any compound outside a research setting.

How we grade evidence. Each compound page carries a grade from A to D. A means multiple human trials; B means at least one human trial or strong, consistent animal data; C means animal or in-vitro data only; D means anecdote or a single preliminary study. Grades reflect the state of the published literature, not our opinion of a compound.

Corrections. If you find an error or a study we missed, email us. We’d rather be corrected than be wrong.