The present invention addresses the problem of providing a composition useful in the fields of food, cosmetics and pharmaceuticals, said composition being capable of synergistically enhancing antioxidant action. The present invention is achieved by preparing an antioxidant composition by combining a specific quantity of glutathione with a general antioxidant so as to prepare an antioxidant composition, thereby synergistically enhancing the antioxidant action of the antioxidant composition. Specifically, the composition contains an antioxidant (A) and glutathione (B), which are contained at a ratio of 1 to 5 parts by weight of component (B) to 100 parts by weight of component (A).本發明課題在於提供抗氧化作用可相乘性地增強並發揮,在食品領域或化妝品、醫藥品領域有用的組成物。 本發明人發現藉由對一般的抗氧化物質組合特定量的麩胱甘肽來調製抗氧化組成物,可相乘性地增強該抗氧化組成物的抗氧化作用,而完成本發明。具體而言為一種組成物,其含有抗氧化物質(A)及麩胱甘肽(B),相對於(A)成分100重量份,以1~5重量份的比例含有(B)成分。