Montelukast is: (A) Selective antagonists of leukotrienes receptor, (B) Lipooxygenase inhibitor, (C) H1 antagonist, (D) H3 antagonist
Answer is A. Montelukast and zafirlukast is selective antagonists of the CysLT1 receptor for leukotrienes. Competetively inhibit the bronchoconstictor effects of leukotrienes. Basic and clinical pharmacology Katzung 13th edition pg 324