Finasteride’s first FDA approval was under the brand name Proscar (finasteride 5mg tablets) on June 19, 1992, for benign prostatic hyperplasia (BPH) in men with an enlarged prostate. Finasteride (Proscar) is a medication that treats the symptoms of an enlarged prostate and a condition called benign prostatic hyperplasia. Finasteride, sold under the brand names Proscar (5 mg) and Propecia (1 mg) among others, is a medication used to treat pattern hair loss and benign prostatic hyperplasia (BPH). [6] Because PROSCAR decreases PSA levels, you should tell your doctor(s) that you are taking PROSCAR. Changes in PSA levels will need to be carefully evaluated by your doctor(s). Finasteride (Proscar) is a medication used alone or with doxazosin (Cardura) to treat men with benign prostatic hyperplasia (BPH). It’s typically recommended for those with an enlarged prostate who also have symptoms, such as problems urinating. Proscar is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with enlarged prostate. Finasteride is for use in men only and should never be taken by a woman or a child. Find patient medical information for Finasteride (Propecia, Proscar) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings.