Finasteride is a 5-alpha reductase inhibitor that is FDA-approved for the treatment of male pattern hair loss or androgenic alopecia. Finasteride 1mg is the generic form of Propecia. When Finasteride is used in a 5mg dose it is generic for Proscar and is FDA-approved to treat benign prostatic hyperplasia (BPH), which is also known as an enlarged prostate.
