Kisspeptin-10
Kisspeptin-10 (Metastin fragment)
The master switch upstream of your sex hormones
A signaling peptide that sits at the very top of the reproductive hormone axis. Kisspeptin-10 stimulates the hypothalamus to release GnRH, which in turn drives LH and FSH and ultimately testosterone or estrogen — making it a research tool for libido, fertility and hormonal signaling that works by amplifying your own production rather than replacing it.
- Half-life
- ~4 min (native), extended in analogs
- Route
- Subcutaneous injection
- Typical dose
- Research-dependent
- Availability
- Research-only
Key Benefits
Stimulates the body's own LH, FSH and sex-hormone production
Researched for libido and arousal
Studied as a fertility and ovulation trigger
Works upstream — amplifies rather than replaces hormones
Does not suppress the natural axis the way exogenous hormones can
Mechanism of Action
How Kisspeptin-10 works
Kisspeptin-10 triggers the reproductive cascade from the top down:
- KISS1R (GPR54) activation — binds kisspeptin receptors on hypothalamic GnRH neurons, the master trigger for the entire reproductive axis.
- GnRH release — drives a pulse of gonadotropin-releasing hormone, which signals the pituitary.
- LH and FSH surge — the pituitary responds with luteinizing hormone and follicle-stimulating hormone, stimulating the gonads.
- Endogenous sex-hormone production — the gonads increase testosterone or estrogen output. Because it amplifies your own axis, response depends heavily on downstream receptor and enzyme genetics.
Your Genetics & Kisspeptin-10
Genetic variants that affect your response
These SNPs determine how effectively Kisspeptin-10 works for you specifically. A genetic peptide report identifies your variants before you start.
The Asn680Ser variant changes how sensitively the gonads respond to the FSH surge Kisspeptin-10 ultimately triggers. Ser/Ser carriers often need a stronger gonadotropin signal for the same downstream effect.
The Trp8Arg variant alters LH structure and activity. Since Kisspeptin-10 works through an LH surge, this variant influences how effectively that signal reaches the gonads.
The PvuII variant shapes estrogen-receptor signaling and the feedback loop that regulates the reproductive axis, influencing how the system responds to a kisspeptin-driven surge.
Aromatase converts testosterone to estrogen. CYP19A1 variants set how much of any kisspeptin-driven testosterone rise is aromatized, shaping the net hormonal outcome.
Which variants do you carry?
Upload your DNA data or order a kit to find out.
Evidence & Research
30+
Published studies
Animal studies and in vitro data with promising but limited clinical validation
Sourcing & access
Where to buy Kisspeptin-10
Kisspeptin-10 is sold as a research compound, not a licensed medicine, so quality and legal status vary widely by country and vendor. If you're sourcing it, treat independent purity testing as non-negotiable.
- Insist on a recent third-party Certificate of Analysis (COA) for the exact batch — labs like Janoshik verify purity and identity.
- Check the legal status where you live before ordering — it differs from country to country.
- Reconstitute correctly with bacteriostatic water and start at a conservative dose.
Swiss Chems is a US research-chemical supplier that publishes third-party Certificates of Analysis. Sold for research use only — check your local laws.
Before you buy: see whether your DNA actually responds to Kisspeptin-10, and at what dose. Analyze my DNA — $99 →
Educational information only, not medical advice. Some outbound links are affiliate links (disclosed, at no extra cost to you), and providers we partner with are listed first. Most peptides are not FDA-approved — consult a qualified professional and check your local laws before purchasing.
Common Stacks
Kisspeptin-10 is commonly combined with:
Gonadorelin
HPG Axis StackModerate EvidenceGonadorelin (GnRH)
A synthetic form of gonadotropin-releasing hormone (GnRH) that directly stimulates the pituitary to release LH and FSH. Because it acts one step below kisspeptin and is given in pulses, gonadorelin is widely used to maintain testicular function and fertility — restarting the downstream hormone cascade without replacing the hormones themselves.
4
Gene variants
30+
Studies
PT-141
Sexual Health StackStrong EvidencePT-141 (Bremelanotide)
A melanocortin receptor agonist, FDA-approved as Vyleesi for low sexual desire (HSDD) in premenopausal women and used off-label for libido in both sexes. Unlike Viagra-type drugs that work on blood flow, PT-141 acts centrally in the brain to raise sexual desire itself — a fundamentally different mechanism. Taken on-demand by subcutaneous injection.
Frequently Asked Questions
How is Kisspeptin-10 different from taking testosterone?
Testosterone replaces the hormone directly and suppresses your natural production through feedback. Kisspeptin-10 works at the very top of the axis — it stimulates your own GnRH, LH and FSH, so the body makes more of its own hormones rather than shutting down. That's why it's studied for fertility, where preserving natural signaling matters.
Why does response to Kisspeptin-10 vary so much?
Because it acts upstream, the final effect depends on every downstream step — your LH and FSH receptor genetics, estrogen-receptor feedback, and aromatase activity. Two people can get the same kisspeptin pulse and end up with different testosterone or estrogen outcomes based on those variants.
Does genetics affect Kisspeptin-10 response?
Yes. FSHR and LHB variants set how strongly the gonadotropin surge reaches the gonads, ESR1 shapes the feedback loop, and CYP19A1 (aromatase) determines the testosterone-to-estrogen balance. A genetic peptide report profiles these so the downstream outcome is predictable.
Learn More About Kisspeptin-10
Your next move
Two ways forward with Kisspeptin-10.
Not sure it's for you?
Will Kisspeptin-10 work for your genes — and at what dose?
Your report scores Kisspeptin-10 against your receptor, CYP and pathway variants — likely responder, non-responder, and a sensible starting dose — in minutes.
Analyze my DNA — $99Already decided?
Get Kisspeptin-10 from Swiss Chems.
A US research-chemical supplier with third-party Certificates of Analysis. Sold for research use only — check your local laws before ordering.
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