title: Diurnal variation in the pharmacokinetics of intravenous theophylline and etophylline in healthy subjects.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D006801:Humans; D007275:Injections, Intravenous; D007700:Kinetics; D008297:Male; D013806:Theophylline / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood / Q000378:metabolism*
chemical_list: D013806:Theophylline; C008749:etofylline