Studied and treasured worldwide for its health-enhancing and antioxidant properties, Chaga is a unique species, and the focus of recent and ongoing scientific research. Host Defense Chaga uses activated, freeze-dried, Certified Organic mycelium, with a full spectrum of constituents: polysaccharides (beta glucans, arabinoxylane, glucose, xylose, galactose and mannose), glycoproteins, ergosterols, triterpenoids and other myco-nutrients, which are essential for Supporting Natural Immunity. Chaga provides maximum antioxidant support against daily free radical damage. Host Defense use of Chaga mycelium, as opposed to the indigestible sclerotia, allows for nutrients to be provided in a fully bio-available form.