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] Find patient medical information for Finasteride (Propecia, Proscar) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Proscar is a medication used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate. Proscar may also be used to reduce the risk of a sudden inability to pass urine and the need for surgery related to 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. 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 is used to treat men who have symptoms of benign prostatic hyperplasia (BPH) and male pattern hair loss, also called androgenetic alopecia. BPH is caused by an enlarged prostate. 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. Proscar (Finasteride) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. 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. 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.