1. (noun) beta blocker (trade name Lopressor) used in treating hypertension and angina and arrhythmia and acute myocardial infarction; has adverse side effects (depression and exacerbation of congestive heart failure etc.)

• metoprolol

1. (noun) beta blocker (trade name Lopressor) used in treating hypertension and angina and arrhythmia and acute myocardial infarction; has adverse side effects (depression and exacerbation of congestive heart failure etc.)

• beta blocker
• beta-adrenergic blocker
• beta-adrenergic blocking agent
• beta-blocking agent