Peptide Education
Which Peptides Are FDA-Approved?
Most peptides people talk about are not FDA-approved drugs. Only a small number are. The rest are sold as research chemicals or made by compounding pharmacies, and those fall under different rules. Checking whether a peptide is approved is one of the fastest ways to judge how much human evidence supports it.
Reviewed for accuracy · Last reviewed October 17, 2026
FDA-Approved Peptides
Each of these has an official label, set dosing, and the human clinical trial data that approval requires. Approval covers a specific condition, so any other use is still off-label.
- Tirzepatide (Mounjaro, Zepbound): type 2 diabetes and weight management
- Semaglutide (Ozempic, Wegovy): type 2 diabetes and weight management
- Tesamorelin (Egrifta): excess abdominal fat in people with HIV
- Bremelanotide, or PT-141 (Vyleesi): low sexual desire in premenopausal women
- Elamipretide, or SS-31 (Forzinity): muscle strength in Barth syndrome, a rare genetic mitochondrial disease
SS-31 needs one extra note. It received accelerated approval in September 2025, which is based on an early measure (knee muscle strength) rather than proven long-term benefit, and a confirmatory trial is still required. The approval covers Barth syndrome only. Its use for energy, aging, or general mitochondrial health is not approved, and gray-market “SS-31” is not the same product as Forzinity.
Peptides Sold as Research Compounds
Many popular peptides have no FDA approval and are sold as research chemicals or compounded preparations. The evidence behind them ranges from a few small human studies to animal research only. Their purity and dosing also aren’t held to the standards of an approved medicine.
- BPC-157, TB-500, KPV, MOTS-c, GHK-Cu
- CJC-1295, ipamorelin, AOD-9604
- Semax and Selank (registered in Russia, not FDA-approved)
The In-Between Cases
Retatrutide is investigational. It has completed Phase 3 trials with positive results, and Eli Lilly plans to file for FDA approval in early 2027. Until it is approved, anything sold as retatrutide is not a legitimate product.
Sermorelin was once approved as Geref but was later taken off the market for commercial reasons. Today it is only available as a compounded product.
Sources
- Stealth BioTherapeutics – FDA accelerated approval of Forzinity (elamipretide HCl) for Barth syndrome
- Lifespan.io – Stealth BioTherapeutics: Forzinity (Elamipretide/SS-31)
- Drugs.com – Retatrutide FDA Approval Status
MLCR SCTY provides educational information, not medical or legal advice. Research-use-only products are not intended for human consumption.