The master switch of reproduction — controls GnRH release and the entire HPG axis in preclinical models. 25+ peer-reviewed preclinical studies. 99%+ HPLC-verified purity. 3-lab independent COA on every batch.
Kisspeptin is a neuropeptide encoded by the KISS1 gene, originally discovered in 1996 at the Pennsylvania State University College of Medicine. It was initially identified as a metastasis suppressor, but its role in reproductive endocrinology — specifically as the master regulator of the hypothalamic-pituitary-gonadal (HPG) axis — has become its primary research focus.
Kisspeptin acts on the GPR54 (KISS1R) receptor on GnRH neurons in the hypothalamus, triggering gonadotropin-releasing hormone (GnRH) secretion. This single signaling event initiates the entire downstream cascade of LH and FSH release from the pituitary, making kisspeptin the upstream "master switch" of reproductive hormone regulation. Research has examined its roles in puberty onset, fertility, and HPG axis modulation.
Kisspeptin is classified as a research-use-only compound. It is not FDA-approved for any therapeutic indication. All references below describe preclinical (in vitro or animal model) research contexts, not human clinical outcomes.
Kisspeptin is the most potent known stimulator of GnRH secretion. It binds to KISS1R on GnRH neurons in the hypothalamus, triggering pulsatile GnRH release. Research examines its signaling kinetics, receptor desensitization patterns, and dose-response relationships.
As the upstream regulator of the entire HPG axis, kisspeptin research spans LH/FSH regulation, ovulation models, spermatogenesis, and sex steroid feedback loops. It has become central to understanding the neuroendocrine control of reproduction.
Preclinical studies explore kisspeptin's role in modulating the hypothalamic-pituitary-gonadal axis — including its interactions with neurokinin B and dynorphin in the "KNDy neuron" model, which is the current paradigm for understanding GnRH pulse generation.
Loss-of-function mutations in KISS1 or KISS1R cause hypogonadotropic hypogonadism and absent puberty. Research explores kisspeptin's role in puberty timing, seasonal breeding regulation, and potential applications in fertility protocol research.
Research-grade Kisspeptin with 3-lab COA verification is available at SMART MD Peptides in a 5mg formulation. Every batch is publicly verifiable at smartmdpeptides.com/verify.
Kisspeptin sits at the very top of the reproductive hormone cascade. It activates GnRH neurons, which trigger LH and FSH release, which in turn stimulate the gonads. Without functional kisspeptin signaling, the entire HPG axis goes silent — as demonstrated by loss-of-function mutations that cause absent puberty and infertility in preclinical and clinical genetic studies.
99%+ HPLC-verified purity. Each batch is independently verified by 3 U.S. laboratories — HPLC for purity, mass spectrometry for molecular weight, and LAL endotoxin assay for safety.
Lyophilized (unreconstituted) Kisspeptin should be stored at -20°C, protected from light and moisture. Once reconstituted, store at 2-8°C and use within the timeframe specified on your lot-specific documentation.
Check the COA before you buy. Compare it against any other supplier's documentation.