| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| R | RESPIRATORY SYSTEM | 呼吸系统 |
| R03 | DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES | 阻塞性气管疾病用药 |
| R03D | OTHER SYSTEMIC DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES | 其它阻塞性气管病系统用药 |
| R03DA | Xanthines | 黄嘌呤类 |
| R03DB | Xanthines and adrenergics | 黄嘌呤类和肾上腺素能类药 |
| R03DC | Leukotriene receptor antagonists | 白三烯受体拮抗药 |
| R03DX | Other systemic drugs for obstructive airway diseases | 其它阻塞性气管病系统用药 |