| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| A | ALIMENTARY TRACT AND METABOLISM | 消化道及代谢 |
| A09 | DIGESTIVES, INCL. ENZYMES | 消化药,含酶 |
| A09A | DIGESTIVES, INCL. ENZYMES | 消化药,含酶 |
| A09AA | Enzyme preparations | 酶制剂 |
| A09AB | Acid preparations | 酸制剂 |
| A09AC | Enzyme and acid preparations, combinations | 酶和酸制剂，复方 |