Get emergency medical help if you have signs of an allergic reaction to triamterene: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
pale skin, easy bruising or bleeding;
slow, fast, or uneven heartbeat;
jaundice (yellowing of the skin or eyes);
little or no urinating;
signs of a kidney stone - sudden pain in your back or side, vomiting, fever, chills, painful urination, and urine that looks, red, pink, brown, or cloudy; or
high potassium level - nausea, weakness, tingly feeling, chest pain, irregular heartbeats, loss of movement.
Common triamterene side effects include:
nausea, diarrhea;
dizziness, headache;
dry mouth; or
feeling weak or tired.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Triamterene side effects (more detail)
