PROBLEM TO BE SOLVED: To provide a peroral solid preparation of the quick-acting short-lasting type which gives no feeling of bitterness and retains properties of nateglinide.SOLUTION: The peroral solid preparation reduced in bitterness contains nateglinide and a water-soluble polymer, and is characterized by containing the water-soluble polymer in an amount of 0.3-6 pts.wt. in terms of solid content, pts.wt. of the nateglinide.COPYRIGHT: (C)2012,JPO&INPIT【課題】苦味を感じさせずかつ速効短時間型のナテグリニドの性質を維持した経口固形製剤を提供すること。【解決手段】ナテグリニド及び水溶性高分子を含有する苦味の低減した経口固形製剤であって、ナテグリニド1重量部に対して水溶性高分子を固形分換算で0.3~6重量部含有することを特徴とする前記経口固形製剤。【選択図】なし