| 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 |
| R03A | ADRENERGICS, INHALANTS | 肾上腺素能药，吸入剂 |
| R03B | OTHER DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES, INHALANTS | 其它阻塞性气管病药，吸入剂 |
| R03C | ADRENERGICS FOR SYSTEMIC USE | 系统用肾上腺素能药 |
| R03D | OTHER SYSTEMIC DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES | 其它阻塞性气管病系统用药 |