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, such as propanolol, that counteracts the excitatory effects of norepinephrine released from sympathetic nerve endings at beta-receptors by chemically blocking those receptors, used primarily to treat angina, hypertension, arrhythmia, and migraine. Also called beta-adrenergic blocking agent.
(plural beta blockers)
From action of drug which blocks beta-adrenergic receptors.