Also known as: GnRH, LHRH, Gonadorelin acetate, Factrel
Gonadorelin is a gnrh analog FDA-approved studied for lh/fsh stimulation. Gonadorelin is a synthetic copy of the body's own GnRH hormone, used to keep the testes active and maintain natural testosterone production and fertility when someone is on testosterone replacement therapy. Research dose: 100–200 mcg 2x weekly. Half-life: 3 minutes. Available from COA-verified vendors with code PEPTIDEX for up to 20% off.
Sourcing data for Gonadorelin is updating.
We verify new listings weekly — check back soon.
Sourcing data for Gonadorelin is updating.
We verify new listings weekly — check back soon.
Synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH). Binds GnRH receptors in the anterior pituitary, stimulating pulsatile release of luteinizing hormone (LH) and folli
⚠️ Educational only · Not medical advice · Consult a doctor · Most peptides are research-only / not FDA-approved for human use
COA-verified vendors · Use code PEPTIDEX for up to 20% off
Verified pricing for Gonadorelin is not yet available in our database. Browse all COA-verified vendors on our price comparison tool, or check individual vendor pages.
Compare All VendorsGonadorelin (also known as GnRH, LHRH, Gonadorelin acetate, Factrel) is a prominently researched experimental compound classified strictly within the GnRH Analog framework. Operating primarily through advanced pharmacological pathways, its core mechanism of action is as follows: it synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH). Binds GnRH receptors in the anterior pituitary, stimulating pulsatile release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Used in compounding to maintain testicular function, prevent atrophy, and preserve fertility during exogenous testosterone therapy. Pulsatile dosing is critical — continuous administration causes downregulation. with a documented biological half-life of roughly 0.05 hours, In preclinical investigative trials and independent academic studies, researchers utilizing Gonadorelin have documented significant, quantifiable biological outcomes, primarily focusing on lh/fsh stimulation, testosterone preservation, hpg axis support during trt, fertility support. Typical research protocols investigate administering 100 to 200mcg via subq pathways 2x weekly. However, it is critically important to understand that while Gonadorelin demonstrates profound physiological potential in highly controlled laboratory settings, it remains classified strictly as a research chemical and has not been approved by the United States Food and Drug Administration (FDA) for human therapeutic, diagnostic, or dietary consumption. Independent chemical analysis via rigorous third-party Certificate of Analysis (COA) testing utilizing High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS) remains the industry gold standard for verifying its base elemental stability when reconstituted appropriately in sterile bacteriostatic water.
Synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH). Binds GnRH receptors in the anterior pituitary, stimulating pulsatile release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Used in compounding to maintain testicular function, prevent atrophy, and preserve fertility during exogenous testosterone therapy. Pulsatile dosing is critical — continuous administration causes downregulation.
Leyendecker et al.: Pulsatile GnRH administration effectively restores LH/FSH pulsatility and fertility in hypogonadotropic hypogonadism patients, establishing the pulsatile dosing principle.
StrongHsieh et al.: Low-dose hCG (mechanistically analogous to gonadorelin for LH stimulation) maintains intratesticular testosterone and sperm production during TRT, demonstrating the principle underlying gonadorelin co-administration.
ModerateFDA-approved as Factrel (historical, for diagnostic testing of HPG axis). Compounded gonadorelin used as TRT adjunct is not itself FDA-approved for this indication. Very short half-life requires frequent dosing. Continuous infusion causes pituitary desensitization and is counterproductive.
See our evidence grading methodology for how we evaluate and grade peptide safety data.
⚠️ For educational purposes only. Not medical advice. Consult a healthcare professional before using any peptide.
Compounded TRT adjunct protocol: 100–200mcg SubQ 2–3x/week. Pulsatile dosing is essential. Continuous use causes desensitization. Research/compounding use only.
Week 1
LH/FSH pulse restoration within hours of first dose
Weeks 2–4
Testicular volume maintenance; intratesticular testosterone preservation
Month 2–3
Spermatogenesis maintained if used consistently alongside TRT
| Side Effect | Incidence | Severity |
|---|---|---|
Injection site reaction | ~10% | mild |
Headache | ~5% | mild |
Nausea | ~3% | mild |
Finding verified, high-purity Gonadorelin requires rigorous COA verification. We independently evaluate vendors based on third-party HPLC testing, purity thresholds (≥98%), and batch-specific documentation.
View COA-Verified Gonadorelin✓ Third-party tested·✓ US shipping·✓ COA on every batch
Disclosure: PeptiDex may earn a commission from purchases made through affiliate links. This does not affect our editorial independence or recommendations. We exclusively feature vendors that pass our strict quality verification protocols.
⚠️ Educational only · Not medical advice · For research use only. Information on this page is compiled from peer-reviewed literature and is intended strictly for educational and informational purposes. Peptides discussed may be unapproved research chemicals — consult a licensed healthcare professional before considering any peptide compound. Read our full disclaimer
Affiliate disclosure: PeptiDex may earn commissions from purchases made through vendor links on this page. This does not affect our editorial ranking or vendor recommendations — we exclusively feature vendors that pass independent COA verification. See our methodology · Editorial policy
12 stacks • exact dosages • cycle lengths • printable reference
No spam. Unsubscribe anytime.
Independent researcher, not a medical professional
PeptiDex Research is the byline used by the independent researcher who builds and maintains PeptiDex. The site is a one-person research project — there is no editorial board, no medical reviewers, and no clinical staff. Content is produced by reading...
View profile