Kisspeptin-10 vs Gonadorelin

Kisspeptin-10

The upstream trigger of the entire reproductive axis. Early human trials hint at uses for HSDD and hypothalamic amenorrhea; nothing is approved.

Best for

Best if you specifically want the furthest-upstream trigger that prompts GnRH release; still research-grade.

Gonadorelin

Synthetic GnRH — the pulsatile signal from the hypothalamus that tells the pituitary to release LH and FSH. The upstream lever in the HPG axis.

Best for

Best when you want the more established, direct axis stimulus with a longer track record.

Kisspeptin-10

The Dhillo group at Imperial College London has run the most clinically interesting human work — restored ovulatory cycles in hypothalamic amenorrhea, plus a small HSDD trial in women showing increased limbic activation on functional MRI. Sample sizes are in the dozens, not the thousands. There is no approved indication anywhere.

Gonadorelin

Gonadorelin (synthetic GnRH) is FDA-approved for diagnostic use (GnRH stimulation test) and historically for pulsatile fertility treatment via portable pumps. The 1986 literature established the pulsatile dosing requirement. As a self-administered TRT-adjunct or PCT tool, the use case is essentially off-label extrapolation from the fertility-pump literature. Real-world experience is wide but formal trials in the wellness/optimisation context are absent.