Organic Mushrooms Made with U.S. Grown Organic Mushrooms Promotes Reduction of Free Radicals Dietary Supplement Certified Organic by the Washington State Department of Agriculture Non GMO Project Verified Host Defense Mesima 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. The Source Full Spectrum of Active Constituents Grown & Processed in the USA Purity Assured Freeze Dried to Preserve Nutrients Bioavailable, Heat Activated Optimized, Peak Life Cycle Selection P Value Certified for Maximum Growth From the Forest, to our Farm, to You Host Defense Mesima The Mesima mushroom is found throughout the tropical and subtropical regions of the world. This mushroom is increasingly drawing the attention of researchers for its immune system enhancing properties.