PROBLEM TO BE SOLVED: To provide compositions that have an excellent glucose metabolism improving action, have high safety, and can be used easily; to provide foods, drinks, medicines, glucose metabolism improving compositions, and glucose metabolism improving agents, containing the composition; and to provide glucose metabolism improving methods.SOLUTION: The present invention provides a composition containing (A) Panax notoginseng, (B) Piper longum extract, and (C) at least either Vitamin B1, or a salt or derivative thereof, wherein Panax notoginseng (A) contains at least either Panaxadiol or Panaxatriol, and the total content of Panaxadiol and Panaxatriol is 0.1-50 mass%.SELECTED DRAWING: None【課題】優れた糖代謝改善作用を有し、安全性が高く、簡便に利用できる組成物、及び該組成物を含有する食品、飲料、医薬品、糖代謝改善組成物、糖代謝改善剤、並びに糖代謝改善方法の提供。【解決手段】(A)田七人参と、(B)ヒハツ抽出物、並びに(C)ビタミンB1、その塩又は誘導体の少なくともいずれかと、を含有し、(A)田七人参が、パナキサジオール及びパナキサトリオールの少なくともいずれかを含有し、パナキサジオール及びパナキサトリオールの合計含有量が、0.1質量%~50質量%である組成物。【選択図】なし