Education only · provider review required
Kisspeptin · Reproductive-endocrinology research
A natural signalling peptide studied for its role in the hormonal axis — human research, no approval.
Medically reviewed by Bernard Garcia, MD
What it is
Kisspeptin is a peptide produced in the hypothalamus that signals the release of gonadotropin-releasing hormone (GnRH), which in turn drives LH, FSH and sex-hormone production. Because it sits at the top of the reproductive hormone axis, it has been studied in fertility, hypogonadism and, more recently, sexual-function research.
It is one of the better-studied research peptides in humans — but as a research tool and diagnostic candidate, not as an approved medicine.
How it works
Human studies have used kisspeptin infusions or injections to trigger hormone release in controlled settings: ovulation induction in IVF research, testing of the hormonal axis, and small studies of brain response to sexual stimuli. Effects are short-lived and dose-dependent, and the studies are small.
Research status
| Research area | Status |
|---|---|
| Reproductive hormone axis (GnRH, LH, FSH) | Human physiology studies |
| Fertility / IVF research | Early human trials |
| Sexual-function research | Small human imaging studies |
| Regulatory status (US FDA) | Not an FDA-approved drug |
Status reflects published research context only and is not a statement of safety, efficacy, or suitability for any person.
Is it legal?
In the United States this compound is not an FDA-approved drug for any use. It is not lawfully sold for human use as a "research chemical", and whether a licensed provider can consider it depends on federal compounding rules and state law, both of which change. This is a general note, not legal advice.
Frequently asked questions
Is kisspeptin a hormone or a peptide?
Both, in the everyday sense: it is a peptide that acts as a signalling hormone in the brain.
Is it used in fertility clinics?
It has been studied as a trigger in IVF research, but it is not an approved fertility medicine and is not routine clinical practice.
Does this site describe how it is used?
No. Vitrex publishes no dosing or protocols for any substance.
Next step
Next step: a 3-minute confidential intake, reviewed by a licensed provider. No treatment is promised or implied.
Free · about 10 minutes · reviewed by a licensed physician
General education · Not medical advice · Provider approval required