Kisspeptin-10

Neuropeptide · Also known as Kisspeptin, KP-10, Metastin

What is Kisspeptin-10?

A neuropeptide that plays a central role in regulating the reproductive hormone cascade. It stimulates GnRH release, which triggers LH and FSH production.

Kisspeptin-10 is the bioactive fragment of the kisspeptin family. It acts on the KISS1R receptor in the hypothalamus to trigger GnRH release, making it a master regulator of reproductive function. Clinical research is exploring its use in fertility treatments and hormone diagnostics.

Key takeaway: Kisspeptin is a master regulator of reproductive hormones with active clinical trials in fertility and hormone diagnostics.

Benefits & evidence

Hormone regulation High confidence
Fertility support Moderate confidence
Libido Preliminary confidence

How it works

Kisspeptin binds to the KISS1R (GPR54) receptor on GnRH neurons in the hypothalamus. This triggers the release of gonadotropin-releasing hormone (GnRH), which in turn stimulates the pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

This cascade is fundamental to reproductive function, puberty initiation, and sex hormone production. Researchers are particularly interested in kisspeptin because it sits upstream of the entire reproductive axis.

Dosing information

Typical dosing protocol
Starting dose

Not well established

Maintenance dose

Not well established


Clinical trials have used IV infusions of 1-10 nmol/kg. Subcutaneous dosing protocols are not well standardized.

Side effects

Most side effects tend to improve as your body adjusts.

Flushing Common
Nausea Moderate
Headache Moderate

Research (10 studies)

Novel KISS1 Gene Mutation Leading to Male Hypogonadotropic Hypogonadism. Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association · 2026