Leukotriene receptor antagonist used for bronchial asthma is:: (A) Zafirlukast, (B) Zileuton, (C) Cromolyn sodium, (D) Aminophylline
Answer is A. Ans. (A) Zafirlukast(Ref: KDT 8th/e p248)Montelukast, zafirlukast and idalukast are Cys-LT1 receptor antagonists.Zileuton inhibits the production of leukotrienes by inhibiting the enzyme 5-lipoxygenase.