| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| A | ALIMENTARY TRACT AND METABOLISM | 消化道及代谢 |
| A06 | Drugs for constipation | 治疗便秘的药物 |
| A06A | Drugs for constipation | 治疗便秘的药物 |
| A06AH | Peripheral opioid receptor antagonists | 外周阿片受体拮抗剂 |
| A06AH02 | alvimopan | 爱维莫潘 |