This medication is used to treat male pattern baldness (androgenetic alopecia) at the crown and in the middle of the scalp. It should be used by adult men only. This medication works by decreasing the amount of a natural body hormone (DHT). Decreasing the amount of DHT leads to increased hair regrowth and slower hair loss. Hair growth on other parts of the body is not affected by Propecia. Women and children should not use this medication. Propecia is not approved for prevention of prostate cancer. It may slightly increase the risk of developing a very serious form of prostate cancer. Talk to your doctor about the benefits and risks.
Read the Patient Information Leaflet provided by your pharmacist before you start taking Propecia and each time you get a refill. If you have any questions regarding the information, consult your doctor or pharmacist. Take this medication by mouth, with or without food, usually once daily, or as directed by your doctor. If the tablet is crushed or broken, it should not be handled by a woman who is pregnant or by a woman who may become pregnant (see also Precautions section). Use this medication regularly in order to get the most benefit from it. Remember to use it at the same time each day. It may take up to 3 months to notice a benefit. You must continue to take this medication to maintain your hair growth. When you stop taking Propecia, any gain in hair quantity is generally lost within 12 months. Inform your doctor if your condition persists or worsens.
Decreased sexual ability/desire may occur. In some men, this medication can decrease the amount of semen released during sex. This is harmless, but has continued in some men even after stopping treatment. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if any of these unlikely but serious side effects occur: lump in the breast, nipple discharge, breast enlargement/tenderness/pain, pain in the testicles, inability to urinate. A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.