Melanotan II vs PT-141
Both are categorized under Melanocortin in our directory—here is how they differ in name, use, and label context.
Melanotan II
Melanocortin
A synthetic melanocortin peptide originally developed for tanning—now notorious for unregulated online sale.
PT-141
Melanocortin
A melanocortin receptor agonist approved as Vyleesi for hypoactive sexual desire in women.