Factrel
Factrel is a synthetic form of gonadotropin-releasing hormone (GnRH) used primarily for diagnostic testing of pituitary function and certain reproductive hormone disorders. It works by stimulating the pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn regulate gonadal function.
Factrel is a GnRH analog used to test pituitary function and treat certain hormonal disorders.
Key facts at a glance
- RxNorm
- 92679
- Generic
- Factrel
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Factrel is used for diagnostic testing of pituitary gonadotropin function, evaluation of hypothalamic-pituitary-gonadal axis disorders, and may be used therapeutically in certain reproductive hormone conditions.
As a synthetic GnRH, Factrel binds to receptors in the pituitary gland, triggering the release of LH and FSH, which stimulate the gonads (ovaries or testes) to produce sex hormones.
Administered by injection; should only be used under medical supervision. May cause hot flashes, headache, or nausea. Contraindicated in pregnancy and known hypersensitivity. Treatment response should be monitored by healthcare providers.
Official drug label
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy