Finasteride is the 70% effective drug and Dutasteride is the 90% effective drug in blocking DHT. You will need a prescription from your pcp and make sure to check out the side effects with any of your other drugs. One side effect that men have is breast enlargement but it may do the same for women too. Also breast tenderness is another side effect for woman. The drug will also raise your testosterone level, yes, women produce it for reproduction reasons. So watch for any unusual hair growth on your body, like a beard or change in your voice. The drug is expensive tho, so it could be in the $100/$200 range for a 30 supply, unless you have a good health care plan. Good luck.