Definitions for "Calcium channel blocker"
A medication that prevents or slows the flow of calcium ions into smooth muscle cells such as the heart. This impedes muscle cell contraction, thereby allowing blood vessels to expand and carry more blood and oxygen to tissues. See Medications.
drug that is used for angina and high blood pressure.
A class of drug that lowers blood pressure by blocking the entry of calcium into muscle cells of arterioles (small blood vessels), preventing them from contracting.