The Peptide Encyclopedia

A fragment of the kisspeptin neuropeptide studied in human reproductive-endocrinology research for its role in gonadotropin release.

A synthetic melanocortin agonist studied for skin pigmentation and sexual function. Sold illegally in many regions; associated with notable safety concerns including melanoma risk discussion.

A melanocortin receptor agonist approved (as Vyleesi) for hypoactive sexual desire disorder in premenopausal women.