Libido · Hormones & fertility
Kisspeptin, simplified.
Also called Kisspeptin-10
Human studiesThe master switch for reproductive hormones, now being studied for fertility and desire.
- Size
- 10 amino acids (short form)
- How it is taken
- Injection or infusion (in studies)
- Status
- Research compound
- Available sizes
- Vials: 5 mg, 10 mg
What is it?
Kisspeptin sits at the top of the hormone chain that controls testosterone, estrogen and fertility.
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What studies show
- In peopleIn people, it raises reproductive hormones and has been used to help trigger egg release in IVF studies.
- In peopleBrain-scan studies found it boosted brain activity linked to attraction and desire.
What we don’t know yet
- Whether it works as a real-world treatment for low libido.
Side effects and cautions
- Mostly short hospital studies so far.
Is it legal?
Not FDA-approved.
Dosage & schedule evidence
How to read published schedules
Third-party protocols are not established clinical dosing standards. Safe human dose, frequency, and duration may be unknown. Research findings may not translate to safe or effective personal use.
| Measurement | Meaning |
|---|---|
| 1 mg | 1,000 mcg (mass) |
| 100 U-100 units | 1 mL (volume, not dose) |
See third-party published protocols ↗ for research context. North Star does not validate these schedules.
Consult your doctor before considering any peptide for personal use. Educational only, not administration guidance.
Common questions
What is Kisspeptin?
The master switch for reproductive hormones, now being studied for fertility and desire. Kisspeptin sits at the top of the hormone chain that controls testosterone, estrogen and fertility.
What does the research say about Kisspeptin?
In people, it raises reproductive hormones and has been used to help trigger egg release in IVF studies. Brain-scan studies found it boosted brain activity linked to attraction and desire.
Is Kisspeptin FDA approved?
Not FDA-approved.
What are the side effects of Kisspeptin?
Mostly short hospital studies so far.
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This page explains published research in plain language. It is not medical advice, a diagnosis, or a recommendation to take anything, and it does not give dosing. Most peptides here are not FDA-approved, and products sold online vary widely in purity. Rules around peptides are changing, so check the current status and talk with a licensed clinician before starting anything. Last reviewed 2026-10-19.