| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| R | RESPIRATORY SYSTEM | 呼吸系统 |
| R05 | COUGH AND COLD PREPARATIONS | 咳嗽和感冒用药 |
| R05F | COUGH SUPPRESSANTS AND EXPECTORANTS, COMBINATIONS | 止咳药和祛痰药的复方 |
| R05FA | Opium derivatives and expectorants | 阿片衍生物和祛痰药类 |
| R05FB | Other cough suppressants and expectorants | 其它止咳药和祛痰药 |