What Kisspeptin is
Kisspeptin is a natural hormone that acts as the master switch for the reproductive system. It triggers GnRH release in the brain, which leads to the release of LH and FSH, and from there testosterone or estrogen.
It comes in different lengths. Kisspeptin-10 is the short fragment most often sold online. Kisspeptin-54 is the longer form used in much of the human research.
Regulatory status in 2026
There is no FDA-approved kisspeptin product, and it is not on the compounding list. It was not part of the 2026 peptide changes.
FDA's Pharmacy Compounding Advisory Committee votes against adding kisspeptin-10 to the compounding list. It was nominated for low testosterone from pituitary causes.
Kisspeptin is not part of the April changes or the July review.
Not approved, not compoundable. Prohibited for male athletes at all times under WADA class S2.
Regulatory status can change. Check the sources linked at the bottom of this page before relying on anything here.
Claims vs. what the research shows
Kisspeptin is a serious research topic in reproductive medicine. The research rarely matches how it's marketed.
Raises testosterone.
Kisspeptin briefly raises LH and testosterone in research settings. Long-term effects of repeated use are not established.
Animal or limited evidenceHelps with IVF.
Kisspeptin-54 has been studied as an egg-maturation trigger in IVF research. This is specialist research use, not an approved treatment.
Animal or limited evidenceBoosts libido.
Brain imaging studies show changes in response to sexual cues. Effects on real-world desire are not established.
Insufficient dataStorage and stability
Peptides break down with heat, light, moisture, and repeated freezing and thawing. Degraded product is one common reason two vials of the "same" peptide behave differently. These are general peptide handling practices. Your supplier's certificate of analysis or label takes priority.
Sealed powder (lyophilized)
- Refrigerate at 36 to 46°F (2 to 8°C) for routine storage.
- Freezer is generally used for long-term storage.
- Keep in its original sealed vial, away from light.
- Let a cold vial reach room temperature before opening to limit condensation.
After reconstitution
- Keep refrigerated. Do not freeze.
- Protect from light. Clear glass lets it through.
- Opened multi-dose bacteriostatic water is typically discarded 28 days after first puncture.
- Log the mix date so you know the vial's age at a glance.
Light exposure is easy to overlook in a fridge door that opens dozens of times a day. VIALTIGHT is building stackable cases that block light from every side. See vialtight.com for updates.
Reconstitution math
Concentration is just the amount of peptide divided by the volume of water added. On a U-100 insulin syringe, 100 units equals 1 mL, so each unit is 0.01 mL. Enter what is on your vial label and what you added to see the concentration.
This shows concentration only. It is not a dosing recommendation. VialTracker runs this math for every vial you log and keeps it with the vial's history.
Safety flags
Product quality is unverified. Gray-market vials have been found underdosed, mislabeled, or contaminated. A certificate of analysis from the seller is not the same as independent testing.
Version matters. Kisspeptin-10 and kisspeptin-54 act differently. Research on one does not automatically apply to the other.
Hormone effects. It acts directly on the reproductive hormone system. Effects of repeated use outside research settings are unknown.
Tested athletes. Prohibited in male athletes at all times under WADA class S2.
FAQ
Is kisspeptin legal?
It is not FDA-approved and can't be compounded under current federal rules, so it cannot be legally marketed for human use.
Is kisspeptin the same as hCG or enclomiphene?
No. They affect the same hormone system at different points, and those other products have their own regulatory status.
Does VialTracker tell me what to take?
No. VialTracker organizes the information you enter and runs the math. It does not recommend doses, products, or protocols.