Anatomical Therapeutic Chemical • R03DA • Xanthines

A Alimentary tract and metabolism

B Blood and blood forming organs

C Cardiovascular system

D Dermatologicals

G Genito urinary system and sex hormones

H Systemic hormonal preparations, excluding sex hormones and insulins

J Antiinfectives for systemic use

L Antineoplastic and immunomodulating agents

M Musculo-skeletal system

N Nervous system

P Antiparasitic products, insecticides and repellents

R Respiratory system

R01 Nasal preparations

R02 Throat preparations

R03 Drugs for obstructive airway diseases

R03A Adrenergics, inhalants

R03B Other drugs for obstructive airway diseases, inhalants

R03C Adrenergics for systemic use

R03D Other systemic drugs for obstructive airway diseases

R03DA Xanthines

R03DA04 theophylline

R03DA05 aminophylline

R03DA74 combinations

R03DB Xanthines and adrenergics

R03DC Leukotriene receptor antagonists

R03DX Other systemic drugs for obstructive airway diseases

R05 Cough and cold preparations

R06 Antihistamines for systemic use

R07 Other respiratory system products

S Sensory organs

V Various