| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N02 | ANALGESICS | 镇痛药 |
| N02A | OPIOIDS | 阿片碱类 |
| N02AB | Phenylpiperidine derivatives | 苯哌啶衍生物 |
| N02AB02 | pethidine | 哌替啶 0.4 g 口服 |
| N02AB02 | pethidine | 哌替啶 0.4 g 直肠给药 |
| N02AB02 | pethidine | 哌替啶 0.4 g 注射 |