<prompt> A patient came to casualty for acute bronchial asthma after treatment for glaucoma. The probable drug may beTimololBetoxalolLantanoprostAnticholinesterase  <response>: Timolol is a non selective Beta blocker and can precipitate acute attacks of asthma in a susceptible individual blockade of Beta 2 receptors. Betaxolol is a cardioselective Beta blocker and is less likely to cause this adverse side effect Refer kDT 6e p 139 