-antiviral medicines for HIV or AIDS
-boceprevir
-certain medicines for fungal infections like ketoconazole, itraconazole, voriconazole
-certain medicines for infection like erythromycin, telithromycin
-cimetidine
-diltiazem
-medicines for erectile disfunction like sildenafil, tadalafil, vardenafil
-medicines for blood pressure
-other alpha-blockers like alfuzosin, doxazosin, phentolamine, phenoxybenzamine, prazosin, terazosin
-paroxetine
-saw palmetto or other dietary supplements
-terbinafine
-verapamil
-warfarin

They need to know if you have any of these conditions:
-advanced kidney disease
-advanced liver disease
-low blood pressure
-prostate cancer
-an unusual or allergic reaction to dutasteride, tamsulosin, sulfa drugs, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your doctor or health care professional for regular check ups. You will need lab work done before you start this medicine and regularly while you are taking it. This medicine can interfere with PSA laboratory tests for prostate cancer. If you are scheduled to have a lab test for prostate cancer, tell your doctor or health care professional that you are taking this medicine. Check your blood pressure as directed. Ask your health care professional what your blood pressure should be, and when you should contact him or her.

Women who are pregnant or may get pregnant must not handle this medicine. The active ingredient could harm the unborn baby. If a pregnant woman or woman who may become pregnant comes into contact with a leaking capsule, she should wash the exposed area of skin with soap and water immediately and check with her doctor or health care professional.

Do not donate blood while you are taking this medicine or for 6 months after stopping this medicine. This will prevent giving this medicine to a pregnant female through a blood transfusion. Ask your doctor or health care professional when it is safe to donate blood after you stop taking this medicine.

This medicine may make you feel dizzy or lightheaded. This is more likely to happen after the first dose, after an increase in dose, or during hot weather or exercise. Drinking alcohol and taking some medicines can make this worse. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not sit or stand up quickly. If you begin to feel dizzy, sit down until you feel better. These effects can decrease once your body adjusts to the medicine.

Contact your doctor or health care professional right away if you have an erection that lasts longer than 4 hours or if it becomes painful. This may be a sign of a serious problem and must be treated right away to prevent permanent damage.

If you are thinking of having cataract surgery, tell your eye surgeon that you have taken this medicine.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Keep container tightly closed. Throw away any unused medicine after the expiration date.