| 摘要 |
The present invention aims to provide a novel drug which has an excellent therapeutic effect on biliary tract diseases and is useful for therapy and/or prophylaxis of biliary tract diseases. More particularly, the present invention provides a therapeutic or prophylactic agent for biliary tract diseases, which agent comprises as an effective component a specific compound having a morphinan skeleton represented by Compound 1, or a pharmaceutically acceptable acid addition salt thereof. |
