Organic Mushrooms Made with U.S. Grown Mushrooms Supports A Healthy Heart Dietary Supplement Certified Organic by the Washington State Department of Agriculture Non-GMO Project Verified Host Defense Reishi uses activated, freeze-dried, Certified Organic mushroom 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 Reishi This popular species, used for more than two millennia in Asia, has been respectfully called the "Mushroom of Immortality". Reishi grows throughout the world and is found primarily on hardwood trees. This mushroom is well known as a tonic for supporting general wellness and vitality.