Never use to treat acute asthma attacks. Not to be substituted abruptly for inhaled or oral corticosteroids. May be associated w/ emergence of Churg-Strauss syndrome. Monitor for signs of eosinophilia, vasculitic rash, worsening pulmonary symptoms, cardiac symptoms &/or neuropathy presenting in patients. Galactose intolerance, Lapp lactase deficiency or glucose-galactose malabsorption.