49 suppliers rated31 with public certificates7 FDA warning letters trackedUpdated October 2026 · How ratings work

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Honest ratings for research peptide suppliers. Star ratings are editorial: one published formula applied to facts anyone can check. They are not user reviews. Last refreshed October 2026.

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Rated Peptides reviews companies that sell materials labeled for laboratory research use only. We write about the suppliers, their paperwork and their policies, never about using what they sell. Nothing here is medical advice. Facts come from each supplier's own public pages and from public records; if something has changed, let us know. Some outbound links may carry referral codes; see the disclosure. © 2026 Rated Peptides · ratedpeptides.org