| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| A | ALIMENTARY TRACT AND METABOLISM | 消化道及代谢 |
| A11 | VITAMINS | 维生素类 |
| A11C | VITAMIN A AND D, INCL. COMBINATIONS OF THE TWO | 维生素A和维生素D，含两者的复方 |
| A11CA | Vitamin A, plain | 维生素A，单方 |
| A11CB | Vitamin A and D in combination | 维生素A和维生素D的复方 |
| A11CC | Vitamin D and analogues | 维生素D及其同系物 |