Theophylline.
D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000097:blood / Q000188:drug therapy*; D001682:Biological Availability; D002648:Child; D002675:Child, Preschool; D002851:Chromatography, High Pressure Liquid; D003692:Delayed-Action Preparations; D004334:Drug Administration Schedule; D006801:Humans; D007124:Immunoenzyme Techniques; D007223:Infant; D007231:Infant, Newborn; D007700:Kinetics; D008099:Liver / Q000378:metabolism; D008875:Middle Aged; D013806:Theophylline / Q000009:adverse effects / Q000097:blood / Q000378:metabolism*
D003692:Delayed-Action Preparations; D013806:Theophylline