| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N02 | ANALGESICS | 镇痛药 |
| N02C | ANTIMIGRAINE PREPARATIONS | 抗偏头痛药 |
| N02CA | Ergot alkaloids | 麦角生物碱类 |
| N02CA52 | ergotamine, combinations excl. psycholeptics | 麦角胺，与非安定药的复方 4 mg 口服 Refers to ergotamine |