<prompt> Theophylline is aMast cell stabilizerLeukotriene antagonistPhosphodiesterase inhibitorLeukotriene synthesis inhibitor  <response>: 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 