Which of the following is a cardioselective β - blocker: (A) Timolol, (B) Metaprolol, (C) Carvedilol, (D) Propanolol
Answer is B. Metaprolol is a selective β1 receptor blocker, hence cardioselective.
Note: Carvedilol is prefered in CHF cases even though its non selective β - blocker. Because it has additional anti-oxidant & anti-inflammatory property.