what is a beta receptor
(BETA-ADRENERGIC BLOCKING AGENTS/BETA-BLOCKERS) OVERVIEW. Beta-Adrenergic Receptor Antagonists (Beta-Blockers) The beta-adrenergic receptor antagonists (beta-blockers) are a family of agents that are widely used to treat hypertension, angina pectoris and cardiac arrhythmias. Beta-blockers are also used for migraine prophylaxis, to treat anxiety, to prevent essential tremor, and to block the side effects of hyperthyroidism.