Bernstein Medical - Center for Hair Restoration - Propecia and Infertility
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Q: I’ve heard that FDA added a description of reports of male infertility to the side effect labels of both Propecia and Proscar (finasteride). Is this a likely side effect in your experience? — S.S., Rolling Hills, California

A: Propecia (finasteride 1mg) may lead to male infertility not only by changing the consistency of the male ejaculate but by decreasing the sperm count as well, but this is uncommon.

Ejaculate is a combination of sperm produced by the testes and a viscous fluid made by the prostate. Since finasteride shrinks the prostate, it can make the ejaculate less viscous (more watery).

Most patients trying to conceive will have no issues while taking Propecia.

If one is having difficulty trying to conceive for 4-6 months, then it is reasonable to stop taking Propecia.

It is important to know that taking Propecia while trying to conceive will not lead to congenital deformities or issues with the fetus as long as the woman does not come in direct contact with the medication.

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Q: I have been finasteride for several years. My wife and I are currently trying to conceive our first child and it is unclear to me if it is safe to continue taking finasteride during this period. Unfortunately, I have not been able to get a clear position via the Internet. Most people commenting on it are on blogs and the response goes both ways — some say it’s ok, others say stop. While I know that it’s imperative that a pregnant woman not touch the medicine, can you please let me know if I can continue taking the medicine while trying to conceive? — M.K., Edgeworth, PA

A: It is OK for you to continue finasteride while your wife is trying to conceive. However, there is some data to suggest that it may slightly decrease fertility since, by shrinking the prostate (the prostate produces 25-30% of semen volume) it slightly changes the overall composition of semen. These effects appear to be temporary and finasteride has no direct effect on sperm. If you and your wife were to have difficulty conceiving, at that point is might be reasonable to temporarily discontinue the medication.

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