This medication is used in men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). It works by reducing the size of the enlarged prostate. This helps to relieve symptoms of BPH such as difficulty in beginning the flow of urine, weak stream, and the need to urinate frequently or urgently (including during the middle of the night). It may also reduce the need for surgery to treat BPH.
Dutasteride 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.
This medication should not be used by women or children.
Sexual problems (such as decreased sexual interest/ability, decrease in the amount of semen/sperm), testicle pain/swelling, increased breast size, or breast tenderness may occur. Sexual problems have continued in some men even after stopping treatment. If any of these effects persist or worsen, tell 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.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: 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.
Before taking dutasteride, tell your doctor or pharmacist if you are allergic to it; or to finasteride; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Do not donate blood while you are taking this medication and for at least 6 months after you stop taking it. This will prevent the possibility of your blood being given to a pregnant woman.
This medication should not be used in women, especially during pregnancy or breast-feeding. It may harm an unborn or breast-feeding baby. Consult your doctor for more details.