title: Studies on the pharmacokinetics of theophylline and its effect on respiratory impedance in asthmatic patients after multiple oral dosing of a sustained-release theophylline tablet formulation.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D001249:Asthma / Q000378:metabolism* / Q000503:physiopathology; D003692:Delayed-Action Preparations; D005260:Female; D006801:Humans; D007700:Kinetics; D008297:Male; D008875:Middle Aged; D012119:Respiration; D013607:Tablets; D013806:Theophylline / Q000008:administration & dosage / Q000378:metabolism*
chemical_list: D003692:Delayed-Action Preparations; D013607:Tablets; D013806:Theophylline