PROBLEM TO BE SOLVED: To provide a composition for oral cavity containing benzalkonium chloride which improves bactericidal activity against pathogenic bacteria in the oral cavity, exhibits an excellent foul breath inhibiting effect, and has a suppressed bitter taste and also has good use feeling, and to provide a method for improving bactericidal activity of the composition.SOLUTION: The composition for oral cavity, in which (C) ascorbic acid phosphate or a salt thereof is formulated with the composition for oral cavity containing (A) benzalkonium chloride and (B) sodium lauroylsarcosine, and a method for improving bactericidal activity of the composition for oral cavity, in which the component (C) is formulated with the composition for oral cavity containing the component (A) and the component (B).SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】口腔内の病原性細菌に対する殺菌力が向上し、優れた口臭抑制効果を奏し、また、苦味が抑えられ使用感も良好な、塩化ベンザルコニウム含有の口腔用組成物及びその殺菌力向上方法を提供する。【解決手段】(A)塩化ベンザルコニウム及び(B)ラウロイルサルコシンナトリウムを含有する口腔用組成物に、(C)アスコルビン酸リン酸エステル又はその塩を配合したことを特徴とする口腔用組成物、及び前記(A)成分及び(B)成分を含有する口腔用組成物に(C)成分を配合する、前記口腔用組成物の殺菌力向上方法。【選択図】なし
