| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N05 | PSYCHOLEPTICS | 安定药 |
| N05C | HYPNOTICS AND SEDATIVES | 催眠镇静药 |
| N05CH | Melatonin receptor agonists | 美洛托宁受体激动剂 |
| N05CH01 | melatonin | 美洛托宁 2 mg 口服 |
| N05CH02 | ramelteon | 雷美替胺 |
| N05CH03 | tasimelteon |