Finasteride, an inhibitor of 5 alpha-reductase, suppresses prostatic dihydrotestosterone in men with benign prostatic hyperplasia.

The oral administration of finasteride, a 4-aza-steroid inhibitor of 5 alpha-reductase, decreases serum dihydrotestosterone levels, but has little effect on serum testosterone. The current study was designed to assess the effect of finasteride on dihydrotestosterone levels in the prostates of men wi... View More