title: Circadian variation in the absorption of three sustained release theophylline products in asthmatic children and the effect of food on absorption of Somophyllin-CRT.
mesh_terms: D001249:Asthma / Q000188:drug therapy* / Q000378:metabolism; D001682:Biological Availability; D002648:Child; D002940:Circadian Rhythm; D003692:Delayed-Action Preparations; D005502:Food; D006801:Humans; D007408:Intestinal Absorption; D013806:Theophylline / Q000008:administration & dosage / Q000378:metabolism* / Q000627:therapeutic use
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline