Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using tolterodine and call your doctor at once if you have any of these serious side effects:
chest pain, fast or uneven heart rate;
confusion, hallucinations;
urinating less than usual or not at all; or
painful or difficult urination.
Less serious side effects may include:
dry mouth, dry eyes;
blurred vision;
dizziness, drowsiness;
constipation or diarrhea;
stomach pain or upset;
joint pain; or
headache.
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.
 Tolterodine side effects (more detail)
