| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| B | BLOOD AND BLOOD FORMING ORGANS | 血液和造血器官 |
| B03 | ANTIANEMIC PREPARATIONS | 抗贫血药 |
| B03B | VITAMIN B12 AND FOLIC ACID | 维生素B12和叶酸 |
| B03BB | Folic acid and derivatives | 叶酸及其衍生物 |
| B03BB51 | folic acid, combinations | 叶酸复方 |