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Leuprolide

Leuprolide is a GnRH agonist that suppresses gonadal hormone production after an initial increase. Approved indications differ between branded formulations.

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At a glance

Evidence stage
Approved use
Regulatory status
The cited US leuprolide acetate injection is approved for palliative treatment of advanced prostate cancer; other formulations require their own indication-specific labels.
Research context
Leuprolide is a GnRH agonist that suppresses gonadal hormone production after an initial increase. Approved indications differ between branded formulations.

What this is

  • Leuprolide is a GnRH agonist that suppresses gonadal hormone production after an initial increase. Approved indications differ between branded formulations.

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

Leuprolide is a GnRH agonist that suppresses gonadal hormone production after an initial increase. Approved indications differ between branded formulations.

Sustained GnRH-receptor stimulation desensitizes the pituitary, lowering the LH signal that supports testosterone production. The initial agonist phase can temporarily raise testosterone before suppression occurs. In advanced prostate cancer, the therapeutic aim is to reduce an androgen signal that supports tumor growth, not to eradicate every malignant cell. Leuprolide injection label.

Evidence limits

How to read the evidence

The historical comparator is not a complete representation of contemporary prostate-cancer care. The trial supports endocrine activity and a disease-specific treatment role, not superiority to modern combination regimens. Its response definition included stable disease, which should not be described as tumor disappearance. Evidence for this formulation and population cannot automatically support unrelated gynecologic, pediatric, or wellness uses. Trial definitions and results; product scope.

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. Leuprolide acetate injection prescribing information
  2. Leuprolide versus diethylstilbestrol randomized metastatic prostate-cancer trial

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