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Your hair loss questions, answered daily.

May 20 2008, 8:32 am PT | Posted in: Drugs

My question is if Propecia blocks DHT, does it block 100% of DHT?

Thanks.

No. Propecia (finasteride 1mg) blocks around 60-70% of DHT at the hair level. The varying numbers depend on the source.

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Derek - May 21st, 2008 at 9:02 am

why not block 100% Is it that we don’t have the technology yet or what?

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Jae P. Pak, M.D.
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This site is intended to educate the public on hair loss topics based on personal experience and opinions from Dr. William Rassman and contributing physician editors. Information provided on BaldingBlog.com should not be used for the purpose of medical diagnosis or treatment.

	Senior Editor: William R. Rassman, M.D. Bio \| CV
	Contributing Editor: Jae P. Pak, M.D. Bio