<prompt> Which beta blocker has anti oxidant property?CeliprololCarvedilolBetaxololPropanolol  <response>: Ref: Goodman and Gillman, Pharmacological Basis of Therapeutics, 11th editionExplanation:In addition to the classical non-subtype selective and hi-selective adrenergic receptor antagonists, there also are a series of drugs that possess vasodilators actions. These effects are produced through a variety of mechanisms including a l adrenergic receptor blockade flabetalol, carvedilol, bucindolol, bevantolol, nipradilol, increased production of NO celiprolol, nebivolol, carteolol, bopindolol and nipradolol, b2-agonist properties celiprolol, carteolol and bopindolol, Ca2 entry blockade icarvedilol, betaxolol and bevantolol, opening of K channels tilisolol, or antioxidant action carvedilol. Ref: Goodman and GillmanThird-Generation b Receptor Antagonists with Additional Cardiovascular ActionsNitric oxide productionb2 receptor agonisma1 receptor antagonismCa2 entry blockadeK channel openingAntioxidantactivity Celiprolol Nebivolol Carteolol Bopindolol Nipradilol Celiprolol Carteolol Bopindolol Carvedilol Bucindotol Bevantolol Nipradilol Labetalol Carvedilol Betaxolol Bevantolol Tilisolol Carvedilol 