Peptide Library
Searchable, scored, and cited. Every peptide page pulls live data from institutional sources (FDA, NIH, EMBL-EBI). Browse by goal below or filter by evidence quality.
Educational only — not medical advice. SmartPeptide does not prescribe, diagnose, or treat. Always consult a licensed healthcare provider before using any peptide, supplement, medication, or protocol.
Kisspeptin
OtherNeuropeptide encoded by the KISS1 gene. Master regulator of the hypothalamic-pituitary-gonadal axis — stimulates GnRH release and downstream LH/FSH/sex-hormone production. Studied as a diagnostic and therapeutic agent for hypogonadism, infertility, and sexual function. Not FDA-approved.
Melanotan II
SkinSynthetic analog of α-melanocyte-stimulating hormone (α-MSH). Binds melanocortin receptors (notably MC1R for tanning and MC4R for sexual function). Originally researched for therapeutic skin pigmentation; abandoned in clinical development. Sold heavily as a grey-market 'tanning peptide.' Significant safety concerns — Class A action by some regulators.