I don’t know whether many of you have seen this but there was recently a clinical study in Japan to evaluate the safety of finasteride. It was the largest and most conclusive study since the initial FDA trials by Merck.
“Adverse sexual side effects (including reduced libido and erectile dysfunction) were observed in only 0.7% of patients, even less than the 2% quoted in the original Propecia study. Based on this data, the research team concluded that Propecia is a safe and effective treatment for androgenic alopecia in Japanese males (and also stated that the results are unlikely to vary between males of different ethnic backgrounds). This study helps confirm the safe and effective nature of Propecia (finasteride) for treating male hair loss.”