| 摘要 |
[Problem]To provide a therapeutic agent for irritable bowel syndrome (IBS), which is excellent in efficacy and safety. [Means for Resolution]It was shown that the bombesin 2 (BB2) receptor antagonists typified by RC-3095 are therapeutic agents for irritable bowel syndrome (IBS), which show excellent efficacy in both of an abdominal symptom and bowel movement disorder. Thus, according to the present invention, it became possible to provide a therapeutic agent for irritable bowel syndrome (IBS) which comprises, as an active ingredient, a bombesin 2 (BB2) receptor antagonist exerting an excellent efficacy in both an abdominal symptom and bowel movement disorder.
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