PROBLEM TO BE SOLVED: To provide an endoplasmic reticulum stress reduction medicine in which a novel ingredient is made an active ingredient.SOLUTION: (1) The endoplasmic reticulum stress reduction medicine includes the extract of black rice as an active ingredient. (2) The endoplasmic reticulum stress reduction medicine includes cyanidin and/or cyanidin glycoside as an active ingredient. (3) The endoplasmic reticulum stress reduction medicine includes a compound shown by chemical formula (2) as an active ingredient.COPYRIGHT: (C)2013,JPO&INPIT【課題】新規の成分を有効成分とする小胞体ストレス軽減剤の提供。【解決手段】1.黒米の抽出物を有効成分とする小胞体ストレス軽減剤。2.シアニジン及び/又はシアニジン配糖体を有効成分とする小胞体ストレス軽減剤。3.下記化合物を有効成分とする小胞体ストレス軽減剤。【選択図】なし