What Is Gonadorelin?

Also known as: GnRH

Gonadorelin is synthetic GnRH — an exact copy of the hypothalamic hormone that pulses every 90-120 minutes to keep the pituitary producing LH and FSH. As a drug it has a long clinical history in fertility medicine and diagnostics.

Its modern surge came from TRT medicine: when US compounding of HCG tightened in 2023, gonadorelin became the standard prescription alongside testosterone to maintain testicular signaling and size. Its ultra-short half-life (minutes) makes dosing frequency the key design question.

What is Gonadorelin studied for?

Side effects & safety

Clinically familiar and mild: injection-site reactions, occasional headache or flushing. Paradox warning from its pharmacology: continuous (non-pulsatile) exposure suppresses the axis instead of stimulating it — that's how GnRH-agonist prostate drugs work.

Legal & approval status

A legitimate pharmaceutical in many contexts; commonly prescribed via compounding in TRT. One of the least gray compounds on this site.

Typical dosing at a glance

Commonly reported protocols use 100 mcg–200 mcg, 2–3x weekly (TRT-support protocols), via subcutaneous injection. For the mixing math — how much bacteriostatic water, exact syringe units, doses per vial — see the Gonadorelin reconstitution calculator →

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Educational overview based on published research and commonly reported community protocols — not medical advice, and not an endorsement of any compound. Consult a licensed healthcare provider.