What Peptides Are FDA Approved?
DR
Dr. Anna Chereshnevskyi · General Practitioner ·
Peptides have produced some of the most important drugs in modern medicine. From insulin to the new generation of GLP-1 weight loss medications, peptide drugs now treat everything from diabetes to infertility to HIV. Below is a practical guide to FDA-approved peptide medications — what they are, what they're approved for, and where they fit in the broader landscape of peptide use.
Metabolic and Weight Loss Peptides
Semaglutide (Ozempic / Wegovy / Rybelsus)
Semaglutide is a GLP-1 receptor agonist approved for type 2 diabetes management (Ozempic, 2017) and chronic weight management (Wegovy, 2021). Rybelsus is an oral form approved for diabetes. It's one of the most prescribed medications in the US and produces average weight loss of 15% of body weight. Manufactured by Novo Nordisk.
Tirzepatide (Mounjaro / Zepbound)
Tirzepatide is a dual GLP-1 and GIP receptor agonist approved for type 2 diabetes (Mounjaro, 2022) and obesity (Zepbound, 2023). It produces greater weight loss than any other approved medication — averaging 20–22% of body weight in clinical trials. Manufactured by Eli Lilly.
Liraglutide (Victoza / Saxenda)
A first-generation GLP-1 agonist approved for type 2 diabetes (Victoza, 2010) and obesity (Saxenda, 2014). It produces more modest weight loss than semaglutide (5–8% on average) and requires daily rather than weekly injection. Still prescribed but largely superseded by newer agents.
Sexual Health Peptides
Bremelanotide / PT-141 (Vyleesi)
PT-141 (bremelanotide) was approved by the FDA in June 2019 under the brand name Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women. It's a melanocortin receptor agonist that works centrally in the brain — unlike PDE5 inhibitors, it increases sexual desire rather than just enabling physical response. It's the first and only FDA-approved treatment for HSDD that works through the central nervous system.
Growth Hormone Axis Peptides
Tesamorelin (Egrifta)
Tesamorelin is a synthetic GHRH analogue approved specifically for the reduction of excess abdominal fat (lipodystrophy) in HIV-positive patients on antiretroviral therapy. Approved in 2010, it's one of the few GH-releasing peptides to complete clinical trials. Off-label use for body composition is common in wellness contexts, though this is not the approved indication.
Sermorelin
A synthetic GHRH analogue that was FDA approved for growth hormone deficiency in children. The original brand (Geref) was discontinued in 2008 due to commercial reasons rather than safety concerns. It remains available through compounding pharmacies and is widely used off-label for anti-aging and body composition in adults.
Hormonal and Reproductive Peptides
Gonadorelin
A synthetic form of GnRH (gonadotropin-releasing hormone) approved for inducing ovulation and diagnosing hypothalamic disorders. Used in fertility treatment and sometimes as a component of testosterone replacement therapy to maintain testicular function.
Leuprolide (Lupron)
A GnRH agonist approved for prostate cancer, endometriosis, uterine fibroids, precocious puberty, and as part of gender-affirming hormone therapy. Works by initially stimulating then suppressing LH and FSH production, effectively inducing a reversible hormonal suppression.
Oxytocin (Pitocin)
The "bonding hormone" is FDA approved as Pitocin for labor induction and postpartum hemorrhage prevention. Available as a nasal spray for off-label use through compounding pharmacies. One of the oldest peptide drugs still in routine clinical use.
Desmopressin (DDAVP)
A synthetic analogue of vasopressin (ADH) approved for diabetes insipidus, bedwetting in children, and bleeding disorders (von Willebrand disease). Available as nasal spray, oral tablet, and injection.
Cardiovascular Peptides
Nesiritide (Natrecor)
A recombinant form of B-type natriuretic peptide (BNP) approved for acutely decompensated heart failure. Causes vasodilation and diuresis. Use has declined as clinical data showed mixed outcomes vs. standard care.
Eptifibatide (Integrilin)
A cyclic peptide that inhibits platelet aggregation (via the GP IIb/IIIa receptor) approved for acute coronary syndrome and coronary angioplasty. Used intravenously in cardiac procedures to reduce clot formation.
Antimicrobial Peptides
Vancomycin
A glycopeptide antibiotic that remains a last-resort treatment for serious MRSA infections and C. difficile colitis. It's been in clinical use since the 1950s and demonstrates that peptide-based antibiotics have a long and validated history.
Daptomycin (Cubicin)
A lipopeptide antibiotic approved for skin and soft tissue infections caused by Gram-positive bacteria, including drug-resistant strains. Works by disrupting bacterial cell membrane integrity.
Other Notable Approvals
Insulin (Multiple brands)
The original peptide drug, insulin has been saving lives since 1921. Modern recombinant insulin was approved in 1982 (Humulin) and has spawned dozens of variants — fast-acting, long-acting, and ultra-long-acting formulations — all FDA approved and all peptide-based.
Glucagon (GlucaGen / Baqsimi)
Approved for emergency treatment of severe hypoglycemia. Available as injection kits and, more recently, as a nasal powder (Baqsimi, 2019) that doesn't require injection — a significant advance for emergency use.
Cyclosporine (Sandimmune)
A cyclic peptide immunosuppressant derived from a fungus, approved for organ transplant rejection prevention and autoimmune conditions. One of the most important drugs in transplant medicine.
The Pipeline: What's Coming
The success of GLP-1 agonists has opened a floodgate of investment in peptide therapeutics. Drugs currently in late-stage trials include:
- Retatrutide — a triple agonist (GLP-1, GIP, and glucagon receptors) showing over 24% weight loss in Phase II trials
- Cagrilintide — an amylin analogue being combined with semaglutide (CagriSema) for additive weight loss effects
- Peptide-based Alzheimer's treatments — multiple BACE inhibitor and amyloid-targeting peptides in trials
The FDA approval of a peptide represents the end of a very long road — but the number of peptide drugs moving through the pipeline has never been larger. The coming decade is likely to produce significantly more approved options than the previous one.
Frequently Asked Questions
Which weight loss peptides are FDA approved?
Semaglutide (Wegovy) and tirzepatide (Zepbound) are the currently approved peptide medications specifically indicated for chronic weight management. Liraglutide (Saxenda) is approved but older and less commonly prescribed for this indication now.
Is BPC-157 FDA approved?
No. BPC-157 has not completed clinical trials and is not FDA approved for any indication. It is sold as a research chemical and is not legally available as a drug in the US.
Are there FDA-approved peptides for anti-aging?
No peptide is currently FDA approved specifically for anti-aging. Tesamorelin (Egrifta) is approved for body composition in HIV patients. Growth hormone itself is approved for specific deficiency conditions in adults and children. Off-label use for anti-aging exists but is not an approved indication.
Can I get FDA-approved peptides without a prescription?
Most FDA-approved peptide drugs require a prescription. Topical cosmetic peptides (found in skincare) don't require a prescription and are freely available. Some research peptides are legally purchasable without a prescription but are not approved for human use.
DR
Written by
Dr. Anna Chereshnevskyi
General Practitioner
Dr. Chereshnevskyi is a general practitioner who graduated from Lviv National Medical University and currently practices at a state hospital in Ankara, Turkey. She specialises in primary care and follows the clinical literature on peptide therapies, metabolic health, and longevity research. She contributes to Peptide.pub as a medical reviewer and blog author, translating complex research into plain, evidence-based language.
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