PROBLEM TO BE SOLVED: To provide an antiamnesic composition which can effectively ameliorate memory and learning abilities declining as aging and can be easily ingested by humans safely and routinely.SOLUTION: An antiamnesic composition contains a resveratrol polymer compound represented by the general formula (1) in the figure produced by a cyclization reaction of resveratrol by heating resveratrol under an alkaline condition.SELECTED DRAWING: None
