Theo-Dur: no loss of sustained-release effect with chewing or crushing.
D000328:Adult; D001249:Asthma / Q000188:drug therapy; D001682:Biological Availability; D003692:Delayed-Action Preparations; D005260:Female; D006801:Humans; D008297:Male; D011897:Random Allocation; D013806:Theophylline / Q000378:metabolism* / Q000627:therapeutic use
D003692:Delayed-Action Preparations; D013806:Theophylline