Problem to be solved: to provide a new composition having an excellent blood glucose level inhibitory effect.A. Alpha. - glucosidase inhibitor and an increase in blood glucose level are made of an effective component of a termite malereliica extract containing gallic acid or its salt.No selection【課題】優れた血糖値上昇抑制作用を有する新たな組成物の提供。【解決手段】没食子酸又はその塩を含有するターミナリアベリリカ抽出物を有効成分とする、α-グルコシダーゼ阻害剤及び血糖値上昇抑制剤。【選択図】なし