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Compounds / GnRH

GnRH

Full name
Gonadotropin-Releasing Hormone (LHRH)
Mechanism
Decapeptide hypothalamic releasing hormone that drives pituitary LH/FSH secretion in a pulsatile manner; basis of the gonadotropin axis.
Half-life
2-4 minutes
Administration
intravenous, subcutaneous, pulsatile pump
Typical dosage*
low: diagnostic 100mcg IV/SC · typical: pulsatile pump dosing (clinical) · high: clinical-protocol-defined
Researched for
diagnostic testing of pituitary-gonadal axis, pulsatile therapy for hypogonadotropic hypogonadism (gonadorelin)
Reported side effects
flushing, headache, injection-site reaction, rare hypersensitivity
Interactions
effects modified by sex steroids, dopamine agonists
Commonly combined
clinical use directed by endocrinologist
Scheduling
🇦🇺 AUPrescription-only; some forms registered (diagnostic)
🇺🇸 USPrescription drug (gonadorelin)
🇬🇧 UKPrescription medicine
Regulatory status
Native GnRH and analogues are prescription medicines used under specialist supervision. Listed here as reference (endogenous hormone).

*Doses are commonly-reported figures from public sources, not a recommendation. Educational only.

12studies
9faqs
reproductive-endocrinehormonalapproved-drug

Studies (12)

YearTitle / venueSource
2025Comparison of outcomes between pulsatile gonadotropin releasing hormone and combined gonadotropin therapy of spermatogenesis in patients with congenital hypogonadotropic hypogonadism
Reproductive biology and endocrinology : RB&E · human
PMID 40119359
2025Pulsatile gonadotropin-releasing hormone therapy: comparison of efficacy between functional hypothalamic amenorrhea and congenital hypogonadotropic hypogonadism
Fertility and sterility · preclinical
PMID 39233038
2024Obesity-Related Hypogonadism in Women
Endocrine reviews · preclinical
PMID 37559411
2024Quercetin Boosts Pulsatile Gonadotropin-Releasing Hormone Release to Improve Luteal Function via Inhibiting NF-κB/NLRP3-Mediated Neuron Pyroptosis
Molecular nutrition & food research · preclinical
PMID 39491793
2024Pulsatile gonadotropin-releasing hormone therapy induces spermatogenesis in pituitary stalk interruption syndrome: A case report and review of the literature
World journal of clinical cases · human
PMID 39015932
2023New Horizons: Gonadotropin-Releasing Hormone and Cognition
The Journal of clinical endocrinology and metabolism · preclinical
PMID 37261390
2022Stress, kisspeptin, and functional hypothalamic amenorrhea
Current opinion in pharmacology · preclinical
PMID 36103784
2022Efficacy of Pulsatile Gonadotropin-Releasing Hormone Therapy in Male Patients: Comparison between Pituitary Stalk Interruption Syndrome and Congenital Hypogonadotropic Hypogonadism
Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · preclinical
PMID 35218954
2022Modelling KNDy neurons and gonadotropin-releasing hormone pulse generation
Current opinion in endocrine and metabolic research · preclinical
PMID 36632147
2021Efficacy and safety of pulsatile gonadotropin-releasing hormone therapy in patients with congenital hypogonadotropic hypogonadism: a multicentre clinical study
Annals of translational medicine · preclinical
PMID 34277762
2018The Gonadotropin-Releasing Hormone Pulse Generator
Endocrinology · preclinical
PMID 30272161
2001Gonadotropin-releasing-hormone-receptor antagonists
Lancet (London, England) · preclinical
PMID 11734258

Questions (9)

What is GnRH?

GnRH (Gonadotropin-Releasing Hormone (LHRH)). Decapeptide hypothalamic releasing hormone that drives pituitary LH/FSH secretion in a pulsatile manner; basis of the gonadotropin axis.

What is GnRH used for?

Commonly discussed uses: diagnostic testing of pituitary-gonadal axis, pulsatile therapy for hypogonadotropic hypogonadism (gonadorelin). There is both human and animal/preclinical research, though the depth and quality vary by indication. Note: most uses are not approved indications.

How does GnRH work?

Mechanism: Decapeptide hypothalamic releasing hormone that drives pituitary LH/FSH secretion in a pulsatile manner; basis of the gonadotropin axis.

Is GnRH safe?

Reported considerations: flushing, headache, injection-site reaction, rare hypersensitivity. There is both human and animal/preclinical research, though the depth and quality vary by indication. Native GnRH and analogues are prescription medicines used under specialist supervision. Listed here as reference (endogenous hormone). This is not a safety endorsement; safety data for unapproved compounds is incomplete.

What is the typical dose of GnRH?

Commonly cited ranges (educational reference, not a recommendation): low diagnostic 100mcg IV/SC, typical pulsatile pump dosing (clinical), high clinical-protocol-defined. Administration: intravenous, subcutaneous, pulsatile pump. Half-life: 2-4 minutes.

Is GnRH legal in Australia?

Australian status: Prescription-only; some forms registered (diagnostic). Native GnRH and analogues are prescription medicines used under specialist supervision. Listed here as reference (endogenous hormone). General regulatory context: most active peptides are Schedule 4 and require a prescription; import via the Personal Importation Scheme requires a valid Australian prescription for prescription-only goods.

How do you store GnRH?

Reconstitution/storage reference: per registered product; storage: per product label.

What is GnRH commonly stacked with?

Commonly discussed combinations (anecdotal for unapproved compounds): clinical use directed by endocrinologist. Stacking increases interaction/safety uncertainty.