<prompt> Contraindications of beta blockers areAsthmaMyocardial infarctionHypeensionArrhythmia  <response>: Ref:KD Tripathi pharmacology 7th edition page.no: 146 the beta blocker is contraindicated in asthma because of beta 2 blocking effect beta 2 agonist cause bronchodilation. Uses of beta blockers are Hypeension, Myocardial infarction, Pheochromocytoma, Cardiac arrhythmias, Thyrotoxicosis, MIGRAINE, essential tremors etc 