any of a class of drugs used to control heartbeat, relieve angina pectoris, treat hypertension, etc. by blocking the nerve impulses that normally excite the beta receptors
A drug that blocks beta-receptors, thus counteracting the excitatory effects of norepinephrine and other beta-agonists released from sympathetic nerve endings. Beta-blockers are used primarily to treat angina, hypertension, arrhythmia, and migraine. Also called beta-adrenergic antagonist . Also called beta-adrenergic blocker .
(plural beta blockers)
From action of drug which blocks beta-adrenergic receptors.