Melanocortin-pathway and reproductive-hormone peptides studied for arousal and libido signaling — including the one that reached approval, and the compounds it was derived from.
Start with the fundamentals before comparing compounds.
6 compounds in this research area. Each links to a full profile, dosing chart, and sourcing.
Melanocortin receptor agonist
A melanocortin-receptor agonist, FDA-approved as Vyleesi for hypoactive sexual desire disorder in premenopausal women. Studied for arousal via central nervous-system pathways rather than the vascular route.
Melanocortin receptor agonist
A synthetic melanocortin agonist studied for skin pigmentation (tanning) and, secondarily, arousal. It is not approved, and research notes meaningful safety considerations.
Kisspeptin decapeptide fragment
A decapeptide fragment of kisspeptin, a key upstream regulator of reproductive hormones, studied in fertility and reproductive-neuroendocrine research.
Synthetic GnRH decapeptide
A synthetic form of gonadotropin-releasing hormone (GnRH). It has established diagnostic and fertility uses and is also used off-label to support endogenous hormone production.
Nonapeptide neurohypophyseal hormone (9-amino-acid cyclic peptide)
Oxytocin is an endogenous nine-amino-acid neuropeptide produced in the hypothalamus and released from the posterior pituitary. The injectable form (Pitocin/Syntocinon) is FDA-approved for labor induction and postpartum use, while intranasal oxytocin is widely researched for social bonding, trust, and anxiety.
Glycoprotein hormone (gonadotropin)
HCG is a placental glycoprotein hormone that mimics luteinizing hormone and is FDA-approved for fertility indications and hypogonadotropic hypogonadism. In male research and TRT-adjacent contexts it is used to maintain testicular testosterone production and testicular size. It is supplied as a lyophilized powder dosed in international units (IU) rather than milligrams.
In-depth, research-framed reading for this category.
Educational summary only. Dosing figures describe how these compounds appear in the research literature and research-community references — they are not a personal treatment plan or a recommendation for human use. For laboratory research use only.
