Learn
The things worth knowing before buying a peptide: what a lab report proves, how much a study can tell you, and the arithmetic of mixing a vial. For individual peptides, see the peptide pages.
Guides
GuideHow to read a peptide certificate of analysisWhat a COA should contain, what HPLC and mass spectrometry each prove, and seven checks that catch most fake or recycled certificates.GuidePeptide reconstitution: the arithmetic, step by stepHow concentration works when a freeze-dried peptide is mixed with water, how U-100 syringe units convert to millilitres, and a calculator that does the sums.GuideAnimal studies vs human trials: how much should you trust them?Why a result in rats is a reason to study something in people, not evidence that it works in people, and how to tell the two apart on any peptide page.GuidePeptide glossaryPlain definitions of the terms that come up on peptide labels, certificates and studies.
Research and education only. Not medical advice. Many peptides on this site are not approved by the FDA for human use. Doses shown are the ones used in published studies and are not a recommendation. Talk to a licensed clinician before using any of them. Read the full disclaimer.