| 摘要 |
Provided is a novel compound having rapid and long-lasting therapeutic effects on diseases exhibiting depressive symptoms. Specifically, provided are an agent for prevention and/or treatment of a depressive symptom, consisting of R(-)-ketamine or a pharmacologically acceptable salt thereof, and a pharmaceutical composition for prevention and/or treatment of a depressive symptom, comprising R(-)-ketamine or a pharmacologically acceptable salt thereof in an effective amount for reducing a depressive symptom, and being substantially free of S(+)-ketamine, and a pharmacologically acceptable salt thereof. |
