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51 research peptides ranked by scientific evidence — from FDA-approved compounds to emerging research. Filter by goal, compare evidence tiers, and explore clinical data.
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FDA Approved
Peptides that have received U.S. FDA approval for at least one clinical indication, confirmed by the FDA Orange Book or drug label database.
Strong Clinical
Peptides with published Phase 2 or Phase 3 randomized controlled trials in humans, indexed on PubMed with statistically significant efficacy endpoints.
Moderate / Preclinical
Peptides with robust animal model data, in-vitro mechanistic evidence, or Phase 1 / early-phase human safety studies in peer-reviewed journals.
Emerging / Limited
Peptides with limited published research, preliminary mechanistic data, or where evidence is primarily anecdotal or based on case reports.
Evidence tiers are determined by the highest-quality study available for each peptide. Our editorial team reviews each classification monthly. Last updated: April 2026.
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This evidence map is for educational and research purposes only. It does not constitute medical advice. Evidence tiers reflect published peer-reviewed literature as of April 2026. PeptiDex may earn a commission from affiliate links. This does not affect our editorial independence.