What does Gonadorelin do? Benefits and evidence
A short-acting fertility hormone used in tests and specialist pump therapy.
Also called: GnRH, LHRH, gonadorelin acetate, gonadorelin hydrochloride, Factrel, Lutrepulse.
Reproductive axis peptides · Gonadotropin-releasing hormone receptor agonist · Evidence: Approved drug.
Gonadorelin copies a brain signal for ovulation and sperm production; fertility studies mainly use frequent pump pulses. Twice-weekly shots alongside testosterone therapy lack comparable fertility evidence. Pituitary tumors, allergy and poorly monitored hormone stimulation are key concerns.
- In studies, timed pulses from a pump helped women whose periods stopped from low brain signals to ovulate. (Studied in a trial)
- In men with diagnosed hormone deficiency, pump treatment can restore sperm production, studies show. (Studied in a trial)
- A pump form (Lutrepulse) was once approved to help women with this hormone deficiency ovulate; it is now discontinued. (Drug label)
- People report adding shots during testosterone therapy to limit testicle shrinkage; fertility benefit is unproven. (Reported by users)
Uses in the sources
- Pituitary LH-response testing is described in authorized UK and French product information. (Clinician-published) (source)
- Pulsatile pumps have been studied for ovulation and sperm production in GnRH deficiency. (Studied in a trial) (source)
- People add intermittent shots to TRT to limit testicular shrinkage; fertility benefit remains unproven. (Reported by users) (source)
- A seven-man Down syndrome pilot explored cognition; this does not establish general nootropic use. (Studied in a trial) (source)
Related to Gonadorelin
- Kisspeptin-10: A short-acting experimental peptide that triggers reproductive hormone release.
- hCG: A fertility hormone with limited testosterone add-on evidence and no proven weight-loss benefit.
Sources
- Compounding and the FDA: Questions and Answers, FDA · FDA · 2026
- FDA warning letter 729447: unapproved gonadorelin (2026-06-17), FDA · 2026
- The 2026 Prohibited List, World Anti-Doping Agency · WADA · 2026
- Therapeutic Goods (Poisons Standard—October 2026) Instrument 2026, Australian Government · Australian Government · 2026
- Bulk Drug Substances Nominated for Use in Compounding Under Section 503B of the Federal Food, Drug, and Cosmetic Act, FDA · FDA · 2025
- FDA CDER alert: compounded-drug recall for lack of sterility assurance (2022-04-26), FDA · 2022
- Gonadorelin 100 micrograms powder for solution for injection, Esteve Pharmaceuticals · 2022
- Expert consensus document: European Consensus Statement on congenital hypogonadotropic hypogonadism--pathogenesis, diagnosis and treatment., Boehm U et al. · Nature reviews. Endocrinology · 2015
- Base de Données Publique des Médicaments, ANSM
- Drugs@FDA: FDA-Approved Drugs, FDA
- Drugs@FDA: FDA-Approved Drugs, FDA
- FD&C Act Provisions that Apply to Human Drug Compounding, FDA · FDA
- PREGNYL- choriogonadotropin alfa kit, Organon
- Product information, Health Canada
- Successful ovulation and pregnancy with pulsatile GnRH pump therapy in a polycystic ovary syndrome (PCOS) patient: a case report., Wang S et al. · Frontiers in endocrinology · 2026
Sources checked: 2026-10-18.
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