Anatomical Therapeutic Chemical (ATC) classification [BR:br08303]
R RESPIRATORY SYSTEM
R03 DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES
R03D OTHER SYSTEMIC DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES
R03DA Xanthines
R03DA54 Theophylline, combinations excl. psycholeptics
D10297 Theophylline and dextrose