| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N03 | ANTIEPILEPTICS | 抗癫痫药 |
| N03A | ANTIEPILEPTICS | 抗癫痫药 |
| N03AB | Hydantoin derivatives | 海因衍生物类 |
| N03AB01 | ethotoin | 乙苯妥英 2.5 g 口服 |
| N03AB02 | phenytoin | 苯妥英 0.3 g 注射 |
| N03AB02 | phenytoin | 苯妥英 0.3 g 口服 |
| N03AB03 | amino(diphenylhydantoin) valeric acid | 氨基(二苯海因)戊酸 0.3 g 口服 |
| N03AB04 | mephenytoin | 美芬妥英（美速因，甲基妥英） 0.4 g 口服 |
| N03AB05 | fosphenytoin | 磷苯妥英 0.45 g 注射 |
| N03AB52 | phenytoin, combinations | 苯妥英，复方 |
| N03AB54 | mephenytoin, combinations | 美芬妥英，复方 |