PROBLEM TO BE SOLVED: To provide a bitter taste inhibitor that can effectively suppress an unpleasant bitter taste.SOLUTION: The bitter taste inhibitor contains a eucommia ulmoides extract as an active component, wherein the intensity of bitter taste of a composition having the bitter taste is 7 or less based on a quinine sulfate standard solution. The bitter taste inhibitor is added in an amount of more than 0.0003 mass% by a solid content, based on the total mass of the composition having the bitter taste.COPYRIGHT: (C)2012,JPO&INPIT【課題】不快な苦味を有効に抑制し得る苦味抑制剤を提供する。【解決手段】杜仲エキスを有効成分として含有する、苦味抑制剤であって、苦味を有する組成物の苦味の強度が硫酸キニーネ標準溶液を基準として7以下で、苦味抑制剤の配合量が前記苦味を有する組成物の全質量に対して固形分で0.0003質量%以上を添加する。【選択図】なし