What are the side effects of PROPECIA, and how often do they occur?
Clinical studies showed that side effects were uncommon and did not affect most men. A small number of men had sexual side effects, with each occurring in less than 2% of men. These included less desire for sex, difficulty in achieving an erection, and a decrease in the amount of semen. These side effects went away in men who stopped taking PROPECIA because of them. In addition, these side effects decreased to 0.3% or less by the fifth year of treatment. In 3 controlled clinical trials for PROPECIA of 12-month duration, 1.4% of patients who took PROPECIA (n=945) were discontinued due to adverse experiences that were considered to be possibly, probably, or definitely drug related. 1.6% of patients who took a sugar pill (placebo; n=934) were discontinued due to adverse experiences. In general use, the following side effects have been reported: allergic reactions including rash, itching, hives, and swelling of the lips and face; problems with ejaculation; breast tenderness and enlargement
