Source:Our blueberry anthocyanin is extracted from the wild living blueberry, which is the special local product of Greater Higgnan Mountains(DaXingAnLing). It is natural and with no pollution. Function: 1,to strengthen eyesight and alleviate visual fatigue 2,it is a natural anti-aging nutritional supplement.Anthocyanin can clear away the radical so it is a perfect ingredient to..