Which of the following β-blocker is safe in asthma: (A) Celiprolol, (B) Timolol, (C) Carveidilol, (D) Labetalol
Answer is A. Celiprolol is a selective β1 blocker (cardioselective), has no action on β2 receptors present on bronchial smooth muscle. Hence it is safe in asthma.