Proscar prevents the conversion of testosterone to dihydrotestosterone (DHT) in the body. DHT is involved in the development of benign prostatic hyperplasia (BPH). Proscar is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate.

The health and medical information provided here is for general purposes only and is not a substitute for the expertise and judgment of your physician, or other health care professional. It should not be understood to indicate that the use of this medicine is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.

Proscar should never be taken by a woman or a child. Finasteride can be absorbed through the skin, and women or children should not be permitted to handle Proscar tablets.
Before taking Proscar, tell your doctor if you have ever had an allergic reaction to finasteride, or to a similar medicine called dutasteride (Avodart).
Although Proscar is not for use by women, this medication can cause birth defects if a woman is exposed to it during pregnancy. Proscar tablets should not be handled by a woman who is pregnant or who may become pregnant. If a woman accidentally comes into contact with this medication from a broken or crushed tablet, wash the area with soap and water right away.
Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.

Get emergency medical help if you have any of these signs of an allergic reaction to Proscar: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.
Less serious side effects may include:
feeling like you might pass out;
swelling in your hands or feet;
pain in the testicles;
impotence, loss of interest in sex, or trouble having an orgasm;
abnormal ejaculation;
swelling or tenderness in your breasts;
dizziness, weakness;
headache;
runny nose; or
skin rash.

Take Proscar exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.
Take this medicine with a full glass of water.
Proscar can be taken with or without food.
To be sure Proscar is helping your condition, your blood will need to be tested on a regular basis. Your doctor will also test your prostate specific antigen (PSA) to check for prostate cancer. Do not miss any scheduled appointments.
It is important to use Proscar regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.
Store Proscar at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use.