The sexual health.

Melanotan II is a synthetic analog of alpha-melanocyte stimulating hormone (α-MSH) that stimulates melanogenesis (skin tanning) and has secondary effects on sexual arousal and appetite suppression.

PT-141 (bremelanotide) is a melanocortin receptor agonist FDA-approved as Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women.

Oxytocin is a 9-amino acid endogenous neuropeptide produced in the hypothalamus and released by the posterior pituitary gland.

Kisspeptin-10 is the shortest bioactive fragment of kisspeptin, a neuropeptide that plays a central role in the initiation of puberty and regulation of the reproductive axis.

Gonadorelin is a synthetic decapeptide identical in structure to endogenous gonadotropin-releasing hormone (GnRH), produced naturally by the hypothalamus.

Testagen is a synthetic tetrapeptide bioregulator (Lys-Glu-Asp-Gly, KEDG) developed by Professor Vladimir Khavinson, targeting testicular tissue and the male reproductive axis.

Alarelin is a synthetic nine-amino-acid GnRH (gonadotropin-releasing hormone) agonist developed and approved in China for controlled ovarian hyperstimulation in assisted reproductive technology (ART).