How we research, rate, and disclose.
Every peptide on this site receives an evidence tier from 1 to 5, based on the quality and quantity of published research — preclinical data, human trials, and regulatory approval status. This rating reflects research quality only. It is not a safety rating and not a recommendation. A high evidence tier does not mean a compound is right for any individual; a low tier does not mean a compound is unsafe.
AminoClub is listed on this site as one option for sourcing vetted research peptides — not a requirement, and not an endorsement over any other vendor. If you choose to purchase through a link to AminoClub, we may earn a commission at no extra cost to you. You are always free to purchase from any vendor of your choosing, including any of the other vendors listed in our Price Index. This relationship never influences how any vendor — including AminoClub — is ranked, rated, or compared. Our Price Index sorts by actual price and verification data only, with no manual override in favor of any vendor we may earn a commission from.
Regulatory status, pricing, and research summaries are reviewed and updated on a monthly basis, with necessary changes made as new information becomes available. Dates of last verification are shown directly on relevant pages, including the Price Index and the regulatory tracker — if a page has gone longer than expected without an update, this is flagged directly on that page rather than left unstated.
