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. Prevagen - Improves Memory* Extra Strength, 20 mgTwice the Apoaequorin as Prevagen Regular StrengthImproves Memory*Supports Health Brain Function*Take daily for best resultsPrevagen Extra Strength is a daily dietary supplement that has been clinically shown to help with mild memory problems associated with aging. Taken daily, most people see effective results and improved memory with regular use. About Quincy Bioscience, the makers of Prevagen Extra Strength:Quincy Bioscience is a biotechnology company based in Madison, Wisconsin.