What are 5-alpha reductase inhibitors?

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Dr. Darria Long Gillespie, MD
Emergency Medicine
5-alpha reductase inhibitors reduce levels of male hormones (androgens) that cause prostate enlargement. 5-alpha reductase inhibitors include dutasteride (Avodart) and finasteride (Proscar), which have similar effectiveness. The product Jalyn combines dutasteride with the alpha blocker tamsulosin in a single capsule. 

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