| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| C | CARDIOVASCULAR SYSTEM | 心血管系统 |
| C02 | ANTIHYPERTENSIVES | 抗高血压药 |
| C02D | ARTERIOLAR SMOOTH MUSCLE, AGENTS ACTING ON | 作用于小动脉平滑肌的药物 |
| C02DB | Hydrazinophthalazine derivatives | 肼酞嗪衍生物 |
| C02DB02 | hydralazine | 肼屈嗪（肼酞嗪，肼苯哒嗪） 0.1 g 口服 |