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Peptides for Libido and Sexual Function: What Is Approved and What Is Not
This is the unusual corner of the site: the best-known compound here is an approved prescription medicine with real randomised trials behind it, sold in parallel through grey-market channels where nothing is verified. The evidence question and the sourcing question have opposite answers, and both matter.
Most discussed here: PT-141 (bremelanotide) · Oxytocin
The compounds
Each one leads with how strong its human evidence is, and what that rating is based on.
- Prescription / GLP-1Melanocortin receptor agonist
PT-141
Approved for premenopausal women with acquired, generalised hypoactive sexual desire disorder. Sold in grey channels predominantly to men.
- Prescription / GLP-1Nine-amino-acid peptide hormone
Oxytocin
An approved injectable medicine in obstetrics. Sold online as a nasal spray for libido, connection and anxiety.
The reading
- Prescription
Oxytocin: 71 Nasal-Spray Trials, and None for What It Is Sold For
Intranasal oxytocin has a large randomised literature - in autism, obesity and social cognition. For the libido use the peptide market sells it for, there is none.
Read guide→ - Prescription
PT-141: An Approved Medicine, Sold Mostly to the Wrong People
Bremelanotide has two Phase 3 trials behind it and an FDA approval. The trials were in premenopausal women; the grey market sells it to men. Both facts matter.
Read guide→