Sexual Function Peptides

PT-141 (Bremelanotide) is a melanocortin receptor agonist studied for sexual dysfunction. Works centrally in the brain rather than peripherally like PDE-5 inhibitors. Marketed as Vyleesi for premenopausal women with HSDD.

Melanotan II is a synthetic analog of alpha-melanocyte stimulating hormone (alpha-MSH) that activates melanocortin receptors. Studied for effects on skin pigmentation and sexual function.

Kisspeptin is a neuropeptide that plays a crucial role in reproductive hormone regulation. Acts upstream of GnRH to control the hypothalamic-pituitary-gonadal axis. Studied for fertility and puberty disorders.

Gonadorelin is a synthetic form of gonadotropin-releasing hormone (GnRH). Used diagnostically and therapeutically for fertility, hypogonadism, and to maintain testicular function during testosterone replacement therapy.