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Calcium Channel Blocker Medicines

Calcium channel blocker medicines prevent calcium from entering muscle cells and blood vessels. As a result, blood vessels relax, which slows the heart rate and increases blood flow to the heart muscle while reducing blood pressure.

Calcium channel blockers are used to treat heart conditions, including high blood pressure, angina caused by coronary artery disease, and fast or irregular heart rhythms. They are also used to treat severe headaches.

By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer Robert A. Kloner, MD, PhD - Cardiology
Last Revised April 4, 2011

WebMD Medical Reference from Healthwise

Last Updated: April 04, 2011
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