PROBLEM TO BE SOLVED: To provide an oral solid preparation improved in stability to light by having prevented photo-discoloration and/or photo-decomposition of a drug unstable to light.SOLUTION: Provided is an oral solid preparation consisting of a base compound and a powdered or granulated additive agent colored by a colorant. Also, provided is a method of manufacturing the oral solid preparation, which includes steps of coloring the additive agent by the colorant, mixing the colored additive agent with the base compound, and tabletting the mixture.COPYRIGHT: (C)2013,JPO&INPIT【課題】光に対して不安定な薬物の光による変色及び分解を防止し、光に対する安定性を向上した経口固形製剤を提供することを目的とする。【解決手段】主剤と、着色剤で着色された粉体又は造粒物状の添加剤とからなる経口固形製剤及び添加剤を着色剤で着色し、得られた添加剤を主剤と混合し、打錠する工程を含む経口固形製剤の製造方法。【選択図】図1
