Provides immune support in a great-tasting flavored powder. Simply dissolve the contents of one packet into four to six ounces of water, stir well and drink. The beta-immune booster (from dried yeast fermentate) supports key immune activity to help your immune cells work at their best. Each packet also contains a specially crafted blend of vitamins and minerals to boost your natural defenses. Contains 500mg of vitamin C and high in antioxidants. It's also an excellent source of zinc and selenium.