PROBLEM TO BE SOLVED: To provide a sugar-absorbing promoter, and to provide a diabetes-preventive/curative agent containing the same.SOLUTION: The sugar-absorbing promoter is characterized by comprising one or more compounds selected from the group consisting of a resveratrol derivative represented by formula (1), pharmaceutically acceptable salt, ester and ether thereof.COPYRIGHT: (C)2013,JPO&INPIT【課題】糖吸収促進剤、ならびに糖尿病予防および治療剤の提供。【解決手段】下記式(1):【選択図】図3