Pharmacology General e9cb7833 Which of the following β-blocker is safe in asthma A Celiprolol B Timolol C Carveidilol D Labetalol High-Yield Explanation Celiprolol is a selective β1 blocker (cardioselective), has no action on β2 receptors present on bronchial smooth muscle. Hence it is safe in asthma.