Single dose cross-over theophylline bioavailability study.
D000328:Adult; D000628:Aminophylline / Q000097:blood; D001682:Biological Availability; D003692:Delayed-Action Preparations; D006801:Humans; D008297:Male; D013806:Theophylline / Q000097:blood*; D013810:Therapeutic Equivalency
D003692:Delayed-Action Preparations; D000628:Aminophylline; D013806:Theophylline