Does propecia (finasteride) affect males sperm?

Propecia (finasteride): It affects the amount of semen produced by the prostate gland. I am not sure that it affects the testicles and their production of sperm. Most likely just the semen and not the sperm.

Temporarily: Propecia (finasteride) can lead to temporary infertility in less than 1% of users. It can cause impotence in up to 19% of users.

No ,Read below: It is used to help hair growth in male pattern baldness. It may take 3 months to see the full effect. • it is used to treat the signs of an enlarged prostate. It may take a few months to see the full effect. • it is used to stop prostate cancer.

Not in young males.: 1 mg of Propecia (finasteride) had no effect on spermatogenesis.