PROBLEM TO BE SOLVED: To provide an oral cavity-dissolving solid which has a good flavor due to a sour taste and saliva secretion promoting ability and which can keep the pH in the oral cavity at 5.0 or more which is low risk of dental caries.SOLUTION: The oral cavity-dissolving solid comprises at least two layers, one layer exhibiting acidity and including an acidulant, and one layer exhibiting alkalinity and including a pH adjustment agent.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】酸味による良好な風味と唾液分泌促進能とを有し、且つ口腔内のpHを、う蝕の危険性の低い5.0以上に保つことができる口腔内溶解性固形物を提供すること。【解決手段】酸味料を含有し、酸性を呈する層と、pH調整剤を含有し、アルカリ性を呈する層の少なくとも2層からなる口腔内溶解性固形物を提供する。【選択図】図5
