100% PURE NATURAL; Good quality and lowest price in large quantiies; Free sample for ... so as to inhibit the viral activity.[Function]a. with good effect on lowering blood glucose.b. help to improve skin metabolism ... .[Satety]DNJ is a natural plant extract with little side-effect.[Specification]1%, 1.5% , 2%,10%,20% ,80%,95%,98 ...