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How does finasteride (Propecia) work?

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Popping a pill to thwart thinning hair may sound too good to be true, but it’s possible with finasteride (Propecia). The drug works by lowering levels of a hormone that shrinks hair follicles, called dihydrotestosterone (DHT).

It slows hair loss in about 88% of men and helps hair regrow in about 66%. You need a doctor’s prescription to get finasteride, which you take every day. Be patient, though: It can take 6 months to see results, because hair loss and growth happen slowly.

From: Medications to Slow Men’s Hair Loss WebMD Medical Reference

SOURCES:

American Hair Loss Association: “Men’s hair loss/introduction,” “Men’s hair loss/treatment.”

MedlinePlus Drug Information: “Finasteride,” “Minoxidil topical.”

FDA: “Questions and Answers: Finasteride label changes.”

American Academy of Dermatology: “Hair loss: Diagnosis and Treatment.”

Reviewed by Michael W. Smith on December 06, 2017

SOURCES:

American Hair Loss Association: “Men’s hair loss/introduction,” “Men’s hair loss/treatment.”

MedlinePlus Drug Information: “Finasteride,” “Minoxidil topical.”

FDA: “Questions and Answers: Finasteride label changes.”

American Academy of Dermatology: “Hair loss: Diagnosis and Treatment.”

Reviewed by Michael W. Smith on December 06, 2017

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How does minoxidil (Rogaine) work?

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