Get emergency medical help if you have any of these signs of an allergic reaction to carvedilol: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
a light-headed feeling, like you might pass out;
slow or uneven heartbeats;
swelling, rapid weight gain, feeling short of breath (even with mild exertion);
cold feeling or numbness in your fingers or toes;
chest pain, dry cough, wheezing, chest tightness, trouble breathing; or
high blood sugar (increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, weight loss).
Common carvedilol side effects may include:
weakness, dizziness;
diarrhea;
dry eyes;
tired feeling; or
weight gain.
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.
 Carvedilol side effects (more detail)
