Disclosed are: a cognitive function-remedying agent which contains, as active ingredients, vitamin A, vitamin B compounds (B1, B2, B6 and B12), vitamin C, vitamin D, vitamin E, zinc, magnesium, pantothenic acid, biotin and folic acid； and a method for remedying a cognitive function, comprising the step of administering vitamin A, vitamin B compounds (B1, B2, B6 and B12), vitamin C, vitamin D, vitamin E, zinc, magnesium, pantothenic acid, biotin and folic acid to a mammal.本發明係提供一種以維生素A、維生素B群(B1、B2、B6及B12)、維生素C、維生素D、維生素E、鋅、鎂、泛酸、生物素及葉酸為有效成分的認知機能改善劑，並提供一種改善認知機能的方法，其係包含將維生素A、維生素B群(B1、B2、B6及B12)、維生素C、維生素D、維生素E、鋅、鎂、泛酸、生物素及葉酸投予哺乳動物之步驟。
