Cardiology | Antiarrhythmic Drug Guide | Class II | Metoprolol

Metoprolol

IV Dose 5 mg q 2 minutes to total 15 mg in adults post MI
Oral dose 100-450 mg/day in adults divided qd or bid
Levels unknown
Kinetics Plasma half-life 3-7 hours in adults
Cautions Similar to propranolol. Fairly cardioselective.
Interactions similar to propranolol
Preparations Lopressor scored tabs: 50, 100 mg Lopressor injection, 1 mg/cc, 5 cc ampuls
FDA approval in children no

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