| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| A | ALIMENTARY TRACT AND METABOLISM | 消化道及代谢 |
| A02 | DRUGS FOR ACID RELATED DISORDERS | 治疗与胃酸分泌相关疾病的药物 |
| A02B | DRUGS FOR PEPTIC ULCER AND GASTRO-OESOPHAGEAL REFLUX DISEASE (GORD) | 消化道溃疡和胃食管返流病治疗药物 |
| A02BA | H2-receptor antagonists | H2-受体拮抗药类 |
| A02BA01 | cimetidine | 西咪替丁（甲氰咪胍，甲腈咪胍，甲腈咪胺） 0.8 g 口服 |
| A02BA01 | cimetidine | 西咪替丁（甲氰咪胍，甲腈咪胍，甲腈咪胺） 0.8 g 注射 |