The Food and Drug Administration is changing warnings on the anti-baldness drug Propecia and the prostate drug Proscar.
The agency says the medications may cause more infertility and sexual problems than previously thought.
The drugs already warn of such side effects.. But the f-d-a wants patients and doctors to know the problems may continue to occur even after the medications are no longer used.
The main ingredient of both drugs is Finasteride, which reduces male hormone activity.
The updates are based on the FDA's latest review of clinical trial results and reports from users.