| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| R | RESPIRATORY SYSTEM | 呼吸系统 |
| R06 | ANTIHISTAMINES FOR SYSTEMIC USE | 系统用抗组胺药 |
| R06A | ANTIHISTAMINES FOR SYSTEMIC USE | 系统用抗组胺药 |
| R06AE | Piperazine derivatives | 哌嗪衍生物类 |
| R06AE04 | chlorcyclizine | 氯环力嗪 0.1 g 口服 |