Slow-release theophylline: do not substitute.
Hendeles
L
L
D003692:Delayed-Action Preparations; D011307:Drug Prescriptions; D006801:Humans; D013806:Theophylline / Q000008:administration & dosage / Q000627:therapeutic use*; D013810:Therapeutic Equivalency
D003692:Delayed-Action Preparations; D013806:Theophylline