| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| R | RESPIRATORY SYSTEM | 呼吸系统 |
| R01 | NASAL PREPARATIONS | 鼻腔用药 |
| R02 | THROAT PREPARATIONS | 咽喉用药 |
| R03 | DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES | 阻塞性气管疾病用药 |
| R05 | COUGH AND COLD PREPARATIONS | 咳嗽和感冒用药 |
| R06 | ANTIHISTAMINES FOR SYSTEMIC USE | 系统用抗组胺药 |
| R07 | OTHER RESPIRATORY SYSTEM PRODUCTS | 其它呼吸系统用药 |