Metoprolol is preferred over Propranolol as it: September 2010: (A) Is more potent in blocking beta-1 receptors, (B) Is more potent in blocking beta-2 receptors, (C) Is more effective in suppressing essential tremors, (D) Impairs exercise capacity
Answer is A. Ans. A: Is more potent in blocking beta-1 receptors Metoprolol is cardioselective beta blocker, more potent in blocking beta-1 than beta-2 adrenergic receptors.