Research-context information only. Kisspeptin is a research peptide. Protocols, doses, and reactions reported below come from published research and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem is variant clarity (KP-10 vs KP-54) and amidation completeness — both affect bioactivity but show similar HPLC behavior unless mass spec is run carefully.
This guide covers documented per-mg pricing, COA verification, vial size selection, and red flags. For dosing context, see the kisspeptin dosing guide.
Most research vendors ship kisspeptin-10 (KP-10) as the standard product. KP-54 (the longer parent peptide) is rare in research-vendor catalogs.
Current Market Pricing (2026)
Vial Size
Typical Price Range
Price Per mg
Best For
2mg
$30-65
$15-32.50/mg
Tolerance testing only
5mg
$50-110
$10-22/mg
Standard short trials
10mg
$90-180
$9-18/mg
Standard monthly protocols — best all-around
10mg × 5 (kit)
$400-800
$8-16/mg
Extended cycles
The pattern: 10mg KP-10 vials are the most-cited size. Per-mg pricing is higher than typical short peptides because kisspeptin has lower vendor competition and higher synthesis cost than 5-7 residue peptides.
Cheapest single-vial option: Ascension Peptides's 50% off drops the 10mg vial to $29.00 ($2.90/mg effective) — the lowest effective price we track for buying one vial. Get the code →
How to Verify Kisspeptin Quality
KP-10 is the C-terminal 10-residue fragment of kisspeptin-54 (Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2) with C-terminal amidation. The amidation is critical for KISS1R receptor binding — non-amidated KP-10 is significantly less active.
What a COA Should Include
Identity Confirmation
Mass spec confirming 1,302.5 Da for KP-10 or 5,857 Da for KP-54
Sequence verification — variant explicitly stated
C-terminal amidation confirmed (mass shift of ~1 Da from non-amidated form)
Purity Testing
HPLC purity at 98%+
Single dominant peak; secondary peaks indicate degradation or non-amidated byproduct
KP-10 reconstituted with bacteriostatic water and refrigerated is documented stable for roughly 28 days in published peptide-stability data. With sterile water (no preservative), the window collapses to ~24 hours.
Niche-format vendor — oral capsule peptides, pre-mixed nasal solutions, and a rare Reta + Cagrilintide combo blend, all 25% off with code thepeptidecatalog.
Most cloudy reconstitutions trace back to one thing — and it isn't the peptide. Sterile, non-pyrogenic, 0.9% benzyl alcohol — formulated for peptide reconstitution, not repackaged from generic stock.
✓ 0.9% benzyl alcohol✓ Made for peptides✓ 30 mL multi-dose
30ml from $18.75 · Ships fast · Code thepeptidecatalog
Frequently Asked Questions
Is kisspeptin legal to buy?
Kisspeptin is sold as a research peptide labeled 'not for human consumption.' It is not FDA-approved. Imperial College London has run Phase 2 trials of intravenous kisspeptin in HSDD and reproductive disorders. Purchasing research peptides is legal in most US jurisdictions.
How much does kisspeptin cost per month?
Community subcutaneous protocols use 100-300mcg/day. Monthly mass at 200mcg/day is 6mg. Research-vendor 5mg vials cost $50-110 and 10mg vials cost $90-180. Monthly cost ranges from $50-180 depending on vial size.
What kisspeptin variant should I buy — KP-10 or KP-54?
KP-10 (the 10-residue C-terminal fragment) is the most-cited variant in research-vendor catalogs and most consumer-facing trials. KP-54 (the longer 54-residue parent) is used in some Imperial College trials but rarely sold by research vendors. Most products sold as 'kisspeptin' are KP-10.
What purity should I look for in kisspeptin?
Third-party HPLC at 98%+ purity, plus mass spec confirming 1,302.5 Da for KP-10 (or 5,857 Da for KP-54). KP-10 is a 10-residue peptide with C-terminal amidation — synthesis is straightforward but incomplete amidation produces lower-activity byproducts.
Can I buy kisspeptin from a pharmacy?
No. Kisspeptin has never been FDA-approved despite Phase 2 trial work at Imperial College and other centers. Research vendors are the only documented commercial source.
This article is for educational and informational purposes only. It is not medical advice and should not be used to diagnose, treat, or prevent any condition. Consult a licensed healthcare provider before using any peptide.
