Triamterene is used alone or with other medications to treat edema (fluid retention; excess fluid held in body tissues) caused by various conditions, including liver and heart disease. Triamterene is in a class of medications called diuretics ('water pills'). It causes the kidneys to eliminate unneeded water and sodium from the body into the urine, but reduces the loss of potassium.
Triamterene comes as a capsule to take by mouth. It usually is taken once a day in the morning after breakfast or twice a day after breakfast and lunch. It is best to take triamterene earlier in the day so that frequent trips to the bathroom do not interfere with nighttime sleep. Take triamterene at around the same time(s) every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take triamterene exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Triamterene is used in combination with other diuretics to treat high blood pressure.
This medicine may be prescribed for other uses; ask your doctor or pharmacist for more information.
Follow your doctor's directions for your meals, including advice for a reduced salt (sodium) diet and daily exercise program. Avoid potassium-containing salt substitutes while you are taking this medication..Talk with your doctor about the amount of potassium-rich foods (e.g., bananas, prunes, raisins, and orange juice) that you may have in your diet.
Take the missed dose as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
muscle weakness or cramps
slow or irregular heartbeat
difficulty breathing or swallowing
unusual bleeding or bruising
lack of energy
loss of appetite
pain in the upper right part of the stomach
yellowing of the skin or eyes
severe dry mouth
unusual bruising or bleeding
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Keep this medicine in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medicine that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medicine.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
weakness or tiredness
Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your body's response to triamterene.
Do not let anyone else take your medicine. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Reviewed - 09/01/2010
AHFS® Consumer Medication Information. © Copyright, 2013. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.