The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.
| Level | Code | Title | |
|---|---|---|---|
| 1 | A | Alimentary tract and metabolism | |
| 2 | A16 | Other alimentary tract and metabolism products | |
| 3 | A16A | Other alimentary tract and metabolism products | |
| 4 | A16AX | Various alimentary tract and metabolism products | |
| 5 | A16AX22 |
