title: Theophylline: the concept of sustained action.
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000627:therapeutic use; D002648:Child; D003692:Delayed-Action Preparations; D004361:Drug Tolerance; D006801:Humans; D013806:Theophylline / Q000009:adverse effects / Q000097:blood / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D001993:Bronchodilator Agents; D003692:Delayed-Action Preparations; D013806:Theophylline