Kisspeptin-10

What Is Kisspeptin-10?

Kisspeptin-10 is a 10-amino-acid neuropeptide — the minimal fully active fragment of kisspeptin — that acts on the KISS1R (GPR54) receptor to trigger release of gonadotropin-releasing hormone (GnRH) from the hypothalamus. Kisspeptin sits upstream of the reproductive (hypothalamic–pituitary–gonadal) axis: by stimulating GnRH, it drives the pituitary to release luteinising hormone (LH) and, in turn, sex-hormone production. It is a genuine subject of reproductive-endocrinology research and has been given to humans in controlled studies, but it is a research peptide, not an approved dietary supplement or medicine, and the human work to date is mostly short-term and intravenous.

Evidence

The reproductive-endocrine activity of kisspeptin-10 in humans is real and has been measured in a clinical study: in healthy men, intravenous bolus kisspeptin-10 produced a rapid, dose-dependent rise in serum LH, and continuous infusion increased LH pulse frequency, LH pulse size and serum testosterone ^{1Reference 1George et al. · 2011Clinical trialKisspeptin-10 is a potent stimulator of LH and increases pulse frequency in men — clinical trialView study →}. That study also observed a reduced response at the highest bolus dose versus a lower one, consistent with receptor desensitisation at high exposure ^{1Reference 1George et al. · 2011Clinical trialKisspeptin-10 is a potent stimulator of LH and increases pulse frequency in men — clinical trialView study →}. This establishes kisspeptin-10 as a potent short-term stimulator of the LH/testosterone axis in men under controlled infusion. What is far less established is any benefit from the injectable or subcutaneous “hormone optimisation” protocols marketed in the peptide space — I did not find a citable trial supporting those consumer-style regimens in this quick pass, and the desensitisation seen at high doses is a real caveat to naive “more is better” dosing.

Dosage & Safety

There is no established consumer dose; the human figures that exist come from intravenous research infusions (in the microgram-per-kilogram range) run under clinical monitoring, not from supplement use, so none is given here as a recommendation. Kisspeptin-10 is not an approved supplement or medicine — it is a research peptide, and this entry is informational only. Longer-term safety, drug interactions, and use in pregnancy are not established / not assessed in this pass; agents acting on the reproductive axis are inherently relevant in pregnancy and fertility contexts and should not be assumed benign. Toxicity has not been characterised here.

References

1. George, J. T., et al. (2011). Kisspeptin-10 is a potent stimulator of LH and increases pulse frequency in men — clinical trial. Journal of Clinical Endocrinology & Metabolism. https://pubmed.ncbi.nlm.nih.gov/21632807/