| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| L | ANTINEOPLASTIC AND IMMUNOMODULATING AGENTS | 抗肿瘤药和免疫机能调节药 |
| L02 | ENDOCRINE THERAPY | 内分泌疗法 |
| L02B | HORMONE ANTAGONISTS AND RELATED AGENTS | 激素拮抗药及其相关药物 |
| L02BA | Anti-estrogens | 抗雌激素类 |
| L02BA01 | tamoxifen | 他莫昔芬（三苯氧胺） 20 mg 口服 |