PROBLEM TO BE SOLVED: To provide an orally disintegrating tablet or the like containing silodosin, in which chemical stability of silodosin to light is improved, and a generation amount of a decomposition product (analog) derived from an active ingredient is suppressed.SOLUTION: There is provided an orally disintegrating tablet or the like containing silodosin and light-shielding agent in which the tablet is colored by a color selected from pale yellow, yellow, pale red, and red. It is preferable that the light-shielding agent is selected from yellow iron oxide, yellow iron sesquioxide, brown iron oxide, iron sesquioxide, edible yellow No.4, edible yellow No.5, edible yellow No.4 aluminum lake, edible red No.2, edible red No.3, and edible red No.102.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】シロドシンを含有する口腔内崩壊錠等について、シロドシンの光に対する化学的な安定性を向上させ、原薬由来の分解産物(類縁体)の発生量を抑制すること。【解決手段】淡黄色、黄色、淡赤色、赤色より選ばれる色で錠剤が着色された、シロドシン及び遮光剤を含有する口腔内崩壊錠等を提供する。前記の遮光剤は黄酸化鉄、黄色三二酸化鉄、褐色酸化鉄、三二酸化鉄、食用黄色4号、食用黄色5号、食用黄色4号アルミニウムレーキ、食用赤色2号、食用赤色3号、食用赤色102号より選ばれることが好ましい。【選択図】図1
