| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N01 | ANESTHETICS | 麻醉药 |
| N01A | ANESTHETICS, GENERAL | 全身麻醉药 |
| N01AX | Other general anesthetics | 其它全身麻醉药 |
| N01AX63 | nitrous oxide, combinations | 一氧化氮，复方 |
| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N01 | ANESTHETICS | 麻醉药 |
| N01A | ANESTHETICS, GENERAL | 全身麻醉药 |
| N01AX | Other general anesthetics | 其它全身麻醉药 |
| N01AX63 | nitrous oxide, combinations | 一氧化氮，复方 |