Theophylline is a: (A) Mast cell stabilizer, (B) Leukotriene antagonist, (C) Phosphodiesterase inhibitor, (D) Leukotriene synthesis inhibitor
Answer is C. Theophylline- Phosphodiesterase inhibitor (inhibit the degradation of CAMP) Sodium cromoglycate is a mast cell stabilizer used for prophylaxis of asthma Montelukast and zafirlukast are leukotriene antagonist Zileuton is a LOX inhibitor