To provide solid preparations comprising starch with a moisture of 10 mass% as a raw material, which is conventionally considered to be unsuitable as a raw material for solid preparations comprising enteric useful bacteria.SOLUTION: Provided is a solid preparation comprising granules of a mixture comprising starch with a moisture of 10 mass% and an excipient, and an enteric useful bacterium. Provided is a method for producing an enteric useful bacterium-containing solid preparation, comprising: granulating a mixture comprising starch with a moisture of 10 mass% and an excipient to obtain granules； and mixing the obtained granules with an enteric useful bacterium.SELECTED DRAWING: Figure 1【課題】腸内有用菌を含む固形製剤の原料として適当でないと従来考えられていた原料である水分１０質量％以上のデンプンを含む固形製剤及びその製造方法の提供。【解決手段】水分１０質量％以上のデンプンと、賦形剤とを含む混合物の造粒物、及び腸内有用菌を含む固形製剤。水分１０質量％以上のデンプンと、賦形剤とを含む混合物を造粒して造粒物を得る工程、及び得られた造粒物と腸内有用菌を混合する工程を含む腸内有用菌含有固形製剤の製造方法。【選択図】図１
