Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
a light-headed feeling, like you might pass out;
slow heartbeats;
shortness of breath (even with mild exertion), swelling, rapid weight gain; or
bronchospasm (wheezing, chest tightness, trouble breathing).
Common side effects may include:
numbness or cold feeling in your hands or feet;
dizziness;
feeling tired;
upset stomach, vomiting, diarrhea, constipation;
vision problems; or
mood changes, confusion, memory problems.
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.
 Nadolol side effects (more detail)
