Proscar is a medicine which main target is to avoid symptoms of BPH or benign prostatic hyperplasia. Proscar decreases DHT or dihydrotestosterone in the body and it helps to treat urinary problem. You may also use it to prevent the posibility of needing surgery. It may also be useful for other health problems, which are not described here. If you have an allergy to Proscar or to some components it consists of don’t use it. If you have an allergy to some drugs related to it you should also avoid using of it. They are Avodart and Propecia. It’s forbidden for using by momen and children. They shouldn’t even take this drug because it can affect through the skin. It’s harmful especially for pregnant women. You should be careful in using it if you have a liver problems, prostate cancer, a bladder infection, bladder muscle problems or if you can’t urinate. It’s strongly recommended to not use it with prescription and nonprescription drugs, dietary medicine, herbal drugs. You may use this medicine alone or in complex with insulin or others drugs. You should also ask your doctor if this medicine could be compound with other drugs you are taking. You should have consultancy with your doctor before using Proscar to prevent negative effects.