Peptide Directory
Category · 4 peptides
Sexual Health & Melanocortin
Melanocortin and reproductive-axis peptides studied for libido, arousal, and tanning.
Alpha-MSHPreclinical
The prototype endogenous melanocortin peptide that governs pigmentation, inflammation, appetite, and thermoregulation through the MC1R–MC5R receptor family.- Anti-inflammatory signaling
- Immunomodulation and tolerance
- Appetite and energy homeostasis
Melanotan IFDA-Approved
A linear, MC1R-selective alpha-MSH analog (afamelanotide) that drives UV-independent skin tanning and is FDA-approved as Scenesse for the rare photosensitivity disorder EPP.- Photoprotection in EPP (approved indication)
- UV-independent skin tanning
- High MC1R selectivity vs Melanotan II
Melanotan IIEmerging
A synthetic, non-selective melanocortin receptor agonist best known for UV-independent skin tanning, with bundled effects on sexual arousal and appetite.- UV-independent skin tanning
- Central sexual arousal and erectile function
- Appetite suppression
PT-141 (Bremelanotide)FDA-Approved
The first FDA-approved centrally acting peptide for a sexual dysfunction indication, working on brain melanocortin receptors rather than peripheral blood flow.- Central sexual arousal and desire
- FDA-approved treatment for HSDD in women
- Off-label male erectile dysfunction

