The plant is native to China, where it was long grown for its edible, starchy roots and for a fibre made from its stems. Pueraria root(kudzu root) rich of amino acid,especially contain necesarry amino acid(calculate as per 100grams dry root):lisine 10mg,Methionine 7.54mg,Phenylalanine 9.65mg,Threonine 9.63mg,leucine 11.54mg,Valine 11.24mg,Histidine 6.74mg,also contain good minerals such as selenium,zinc,manganese,germanium,etc.