| 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 |
| R05C | EXPECTORANTS, EXCL. COMBINATIONS WITH COUGH SUPPRESSANTS | 祛痰药，与止咳药的复方除外 |
| R05CA | Expectorants | 祛痰药 |
| R05CB | Mucolytics | 粘液溶解药 |