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Goserelin

Goserelin is a GnRH agonist that ultimately suppresses ovarian or testicular sex-hormone production after an initial stimulatory phase.

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At a glance

Evidence stage
Approved use
Regulatory status
The cited ZOLADEX product has FDA-approved roles in specified prostate and breast cancer settings, endometriosis, and endometrial thinning before ablation.
Research context
Goserelin is a GnRH agonist that ultimately suppresses ovarian or testicular sex-hormone production after an initial stimulatory phase.

What this is

  • Goserelin is a GnRH agonist that ultimately suppresses ovarian or testicular sex-hormone production after an initial stimulatory phase.

What this isn't

  • A recommendation to use, prepare, combine, or administer a product
  • Evidence that a related molecule or a differently formulated product has the same effects

Key terms

Goserelin is a GnRH agonist that ultimately suppresses ovarian or testicular sex-hormone production after an initial stimulatory phase.

Continued GnRH-receptor stimulation makes the pituitary less responsive, reducing LH and FSH and then sex-hormone production. The initial stimulation can briefly worsen hormone-dependent symptoms before suppression develops. The approved indications depend on the product presentation and clinical setting, so a single umbrella claim of hormone balancing would misrepresent its effects. ZOLADEX prescribing information.

Evidence limits

How to read the evidence

The ovarian-protection trial does not establish a guarantee of future fertility or an approved universal fertility-preservation indication. Its primary analysis had substantial missing endpoint data and a specific breast-cancer population. Cancer control, suppression of endometriosis symptoms, and preservation of ovarian function are different clinical goals and require separate evidence rather than a pooled efficacy claim. POEMS limitations; product indications.

Sources appraised 2026-10-28. Educational information; not medical advice. Study findings apply to the populations, preparations and outcomes described.

External sources and citations

  1. ZOLADEX prescribing information
  2. POEMS randomized ovarian-protection study

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