| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| A | ALIMENTARY TRACT AND METABOLISM | 消化道及代谢 |
| A16 | OTHER ALIMENTARY TRACT AND METABOLISM PRODUCTS | 其它消化道和代谢药物 |
| A16A | OTHER ALIMENTARY TRACT AND METABOLISM PRODUCTS | 其它消化道和代谢药物 |
| A16AA | Amino acids and derivatives | 氨基酸及其衍生物 |
| A16AB | Enzymes | 酶类 |
| A16AX | Various alimentary tract and metabolism products | 各种消化道产物及代谢产物 |