title: Theophylline benefits and difficulties.
mesh_terms: D000328:Adult; D001249:Asthma / Q000188:drug therapy; D001991:Bronchitis / Q000188:drug therapy; D002648:Child; D006801:Humans; D013806:Theophylline / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D013806:Theophylline