Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
chest pain, fast or slow heart rate;
a light-headed feeling, like you might pass out;
shortness of breath (even with mild exertion), swelling, rapid weight gain;
fever, upper stomach pain, not feeling well; or
lung problems--anxiety, sweating, pale skin, wheezing, gasping for breath, cough with foamy mucus.
Common side effects may include:
nausea, constipation;
headache, dizziness; or
low blood pressure.
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.
 Verapamil side effects (more detail)
