| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| M | MUSCULO-SKELETAL SYSTEM | 肌肉-骨骼系统 |
| M03 | MUSCLE RELAXANTS | 肌肉弛缓药 |
| M03B | MUSCLE RELAXANTS, CENTRALLY ACTING AGENTS | 中心作用的肌肉弛缓药 |
| M03BB | Oxazol, thiazine, and triazine derivatives | 恶唑、噻嗪和三嗪衍生物 |
| M03BB53 | chorzoxazone 0.125 g/acetylsalicylic acid 0.5 g/dextropropoxifene (napsylate)45 mg | 氯唑沙宗，与非安定药类的复方 |