finasteride , a 5 alpha-reductase inhibitor , was administered to normal male volunteers in a blinded placebo-controlled study at daily oral doses of 25 , 50 , and 100 mg for 11 days ( part 1 ) and daily oral doses of 0.04 , 0.12 , 0.2 , and 1.0 mg for 14 days ( part 2 ) .
C0060389
finasteride
C1318898
5 alpha-reductase inhibitor