Steady-state pharmacokinetics of two sustained-release theophylline products during once-daily and twice-daily dosing.
D000328:Adult; D001682:Biological Availability; D002851:Chromatography, High Pressure Liquid; D003692:Delayed-Action Preparations; D004334:Drug Administration Schedule; D006801:Humans; D008297:Male; D011897:Random Allocation; D013806:Theophylline / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*
D003692:Delayed-Action Preparations; D013806:Theophylline