Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Head-to-head comparison of Gonadorelin and Kisspeptin-10 — mechanism, dosing, side effects, legal status, and pricing.
Gonadorelin is a synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH/LHRH; sequence pyroGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2). It was historically FDA-approved as Factrel (diagnostic GnRH stimulation test) and Lutrepulse (pulsatile IV pump for hypothalamic amenorrhea); both products are discontinued in the US. Gonadorelin remains on the FDA Category 1 bulk substances list and is widely compounded, most commonly as an off-label adjunct to TRT intended to preserve HPG-axis signaling.
Kisspeptin-10 (KP-10) is the 10-amino-acid C-terminal fragment of kisspeptin (the KISS1 gene product, also called metastin) that retains full biological activity. It is an investigational signaling peptide that sits at the top of the reproductive axis and is studied for fertility, hypogonadism, and as a diagnostic challenge. It is not FDA-approved.
Gonadorelin
Kisspeptin-10
Category
Legal Status
Mechanism
Dose Range
Route
Frequency
COA-verified vendors · trust score ≥70 required · single-vial price — bulk/bundle deals may be lower
Gonadorelin
Kisspeptin-10
COA corpus from Disclosed Labs — independently tested batches only.
Gonadorelin
4
COAs
99.6%
Avg purity
2
Labs
Kisspeptin-10
50
COAs
99.6%
Avg purity
11
Labs
The historical FDA-approved gonadorelin products (Factrel for diagnostic pituitary testing; Lutrepulse for pulsatile ovulation induction in hypothalamic amenorrhea) are discontinued commercially, but gonadorelin remains on the FDA Category 1 bulk substances list and is compounded under 503A/503B. Pulsatile pump delivery (every 60–120 minutes) is the clinical gold standard for hypothalamic amenorrhea and congenital hypogonadotropic hypogonadism, with systematic-review evidence supporting high ovulation rates (Tranoulis 2018, PMID 29605411) and faster spermatogenesis versus cyclical hCG/hMG in CHH men (Zhang 2018/2019, PMID 30569789; Büchter 1998, PMID 9758439). Use as a TRT adjunct in place of hCG is widespread in men's-health practice but is off-label and has limited dedicated controlled-trial data; its ability to maintain intratesticular testosterone once the HPG axis is fully suppressed by exogenous testosterone has not been rigorously established.
Key references
The foundational role of kisspeptin in reproduction was established by de Roux et al. (PNAS, 2003, PMID 12944565) and Seminara et al. (NEJM, 2003, PMID 14573733), who identified loss-of-function mutations in GPR54 causing hypogonadotropic hypogonadism. Dhillo et al. (JCEM, 2005) showed kisspeptin-54 stimulates LH, FSH, and testosterone in men; George et al. (JCEM, 2011, PMID 21632807) confirmed IV kisspeptin-10 boluses stimulate LH and increase pulse frequency in men. Young et al. (Neuroendocrinology, 2012, PMID 22377698) showed kisspeptin infusion restores pulsatile LH in patients with neurokinin B (TAC3/TACR3) signaling deficiencies. Abbara/Jayasena and colleagues (JCEM 2015, PMID 26192876; Hum Reprod 2017, PMID 28854728) demonstrated kisspeptin-54 can trigger oocyte maturation in IVF with very low OHSS rates. The kisspeptin receptor agonist MVT-602 has been in Phase 2 development for female HSDD. Grey-market SubQ use (~200 mcg 2x/week for libido or testosterone support) is not supported by controlled trials.
Gonadorelin and Kisspeptin-10 are both in the Hormone category and may have overlapping mechanisms. Researchers should review both profiles carefully, understand the mechanisms of action, and monitor the relevant biomarkers when combining compounds in the same class. As always, consult a licensed healthcare provider before making any decisions about combining research compounds.
This platform provides informational tools only, not medical advice. This comparison is for educational purposes only. Consult a licensed provider.
Dosing Notes
Half-life
Side Effects
Contraindications
Lab Testing
Key references
Disclosed Labs