| 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 |
| M03BA | Carbamic acid esters | 氨基甲酸酯类 |
| M03BB | Oxazol, thiazine, and triazine derivatives | 恶唑、噻嗪和三嗪衍生物 |
| M03BC | Ethers, chemically close to antihistamines | 化学与抗组胺药近似的醚类 |
| M03BX | Other centrally acting agents | 其它起中心作用的肌肉弛缓药 |