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Calcium channel blocker |
Also found in: Wikipedia | 0.04 sec. |
Calcium channel blocker A drug that relaxes blood vessels and lowers blood pressure. Mentioned in: Heart Failure, Hypertrophic Cardiomyopathy calcium channel blocker a drug, such as nifedipine or verapamil, that selectively blocks the influx of calcium ions through a specific ion channel (the slow channel or calcium channel) of cardiac muscle and smooth muscle cells; used in the treatment of cardiac arrhythmias. Calcium channel blockers act to control arrhythmias by slowing the rate of sinoatrial (SA) node discharge and the conduction velocity through the atrioventricular (AV) node. Called also calcium blocker, calcium antagonist. |
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| A calcium antagonist initially released in the UK in 1991, Norvasc has been available in Japan since 1993. As a research-based developer, manufacturer and marketer, Yamanouchi has introduced several world-class drugs to the international market, including the H2 antagonist, famotidine; the calcium antagonist, nicardipine; and tamsulosin, a treatment for functional symptoms of benign prostatic hyperplasia. Nor, they said, did the study provide enough evidence to recommend that people should stop using calcium channel blockers, or calcium antagonists as they are also known. |
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Calcium antagonist
