Sexual / Hormonal

Sexual & Hormonal Peptides

Sexual and hormonal compounds include melanocortin receptor agonists and peptides that act on the hypothalamic-pituitary-gonadal axis, studied in reproductive and sexual-health research. The group spans FDA-approved products and research-only materials, so handling and regulatory status vary widely from entry to entry.

6 compounds

Sexual / HormonalVerified

PT-141

Bremelanotide · Vyleesi

A synthetic melanocortin receptor agonist that acts on central pathways involved in sexual arousal. FDA-approved as Vyleesi and studied for hypoactive sexual desire disorder in premenopausal women.

Half-life · ~2.7 h terminal (range 1.9-4.0 h)
Sexual / HormonalVerified

Melanotan II

MT-2 · MT2

A synthetic cyclic analog of alpha-melanocyte-stimulating hormone acting as a non-selective melanocortin receptor agonist. Studied in relation to skin pigmentation and, via MC4R activation, sexual arousal. Not FDA-approved.

Half-life · ~1 h
Sexual / HormonalVerified

Kisspeptin

Kisspeptin-10 · Kisspeptin-54

Endogenous neuropeptides (KISS1 products) that agonize the KISS1R/GPR54 receptor on hypothalamic GnRH neurons, stimulating pulsatile GnRH release and downstream LH and FSH secretion. Studied in reproductive neuroendocrinology and fertility research.

Half-life · Kisspeptin-10 ~4 min; kisspeptin-54 ~27.6 min
Sexual / HormonalVerified

Gonadorelin

GnRH · Factrel

A synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH) that binds pituitary GnRH receptors to stimulate release of LH and FSH. Pulsatile use stimulates them; continuous use suppresses them.

Half-life · ~2-10 min (IV distribution); terminal ~10-40 min
Sexual / HormonalVerified

HCG

Human Chorionic Gonadotropin · Novarel

A glycoprotein hormone that acts as a functional analog of luteinizing hormone, binding LH/CG receptors to stimulate gonadal steroidogenesis. FDA-approved for uses including ovulation induction and certain hypogonadotropic conditions. Dosed in international units.

Half-life · Biphasic; terminal ~24-36 h
Sexual / HormonalVerified

Melanotan I

Afamelanotide · Scenesse · MT-1 · NDP-MSH

A synthetic linear analog of alpha-melanocyte-stimulating hormone ([Nle4-D-Phe7]-alpha-MSH) that acts as a melanocortin (MC1R-preferring) agonist to stimulate eumelanin synthesis. Marketed as afamelanotide (Scenesse), an FDA-approved subcutaneous implant for photoprotection in erythropoietic protoporphyria.

Half-life · Intrinsic peptide half-life short (under ~1 h); the approved implant (Scenesse) is a bioresorbable subcutaneous depot releasing over about 2 days

Educational reference only, compiled from public sources. Not medical advice, diagnosis, treatment, or a dosing recommendation, and not a recommendation to use any compound. Many compounds listed are research materials not approved for human use. Consult a qualified professional.