| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N02 | ANALGESICS | 镇痛药 |
| N02B | OTHER ANALGESICS AND ANTIPYRETICS | 其它解热镇痛药 |
| N02BB | Pyrazolones | 吡唑酮类 |
| N02BB52 | metamizole sodium, combinations excl. psycholeptics | 安乃近，与非安定药的复方 |