BETA-BLOCKER ANTIHYPERTENSIVES - A large group of medications that act to block specific receptors in the nervous system. The effect of beta blockade results in slowing of the heart rate, reduction in blood pressure, and reduced anxiety. Beta-blockers are used in the treatment of angina, heart arrhythmias, high blood pressure, mitral valve prolapse, and other conditions. Examples include these trade names: Inderal, Corgard, Tenormin, Ziac, Visken, Normodyne, Lopressor, Kerlone, Coreg, and others.