If you are experiencing a medical emergency please dial 911 immediately
Calcium channel blockers can lower blood pressure or slow the heart rate. They might be used to treat high blood pressure, angina caused by coronary artery disease, and fast or irregular heart rhythms. They are also used to treat cluster headaches.
Last Revised: April 5, 2013
Author: Healthwise Staff
Medical Review: E. Gregory Thompson, MD - Internal Medicine & Robert A. Kloner, MD, PhD - Cardiology
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