Pharmacology Questions (4) for USMLE, MCCEE, PLAB, FCPS, PDMC,MRCP………

A 70-year-old man visits his physician for a routine physical examination. He has prostatic cancer and takes leuprolide for treatment.

What is the mechanism of action of this drug?

A- It is a competitive inhibitor of testosterone

B- It is 5 alpha-reductase inhibitor

C- It is synthetic analog of GnRH

D- It is an alpha-adrenergic blocker


Leuprolide is a synthetic analog of GnRH. It is indicated for the treatment of prostate cancer, breast cancer and endometriosis.

The correct answer is C

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