Calcium channel blocker medicines prevent calcium from entering muscle cells and blood vessels. This allows blood vessels to relax and widen so blood can flow more easily in the body.
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.
Medical Review:Adam Husney, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Brian O'Brien, MD, FRCPC - Internal Medicine & Martin J. Gabica, MD - Family Medicine & Robert A. Kloner, MD, PhD - Cardiology