Which of the following drugs can cause "Churg Strauss syndrome": (A) Omalizumab, (B) Theophylline, (C) Montelukast, (D) Zileuton
Answer is C. Montelukast and Zafirlukast are leukotriene receptor antagonists used in bronchial asthma, which can lead to “Churg strauss syndrome” characterized by vasculitis and eosinophilia.