Prebiotic for the Microbiome Made with U.S Grown Organic Mushrooms Mycelium Gluten FreeNon GMO Project VerifiedDietary Supplement Certified Organic by the Washington State Department of Agriculture From the Forest, to our Farm, to You™ Host Defense® Turkey Tail Predominant in woodlands throughout the world, Turkey Tail is one of the best-documented mushrooms in medical research. With a wide spectrum of beneficial properties, Turkey Tail shows much promise in supporting the immune system with its protein-bound and unique polysaccharides. Turkey Tail mushroom mycelium supports beneficial microflora in the digestive and gastrointestinal ecosystem. Host Defense® Turkey Tail uses activated, optimally dried, Certified Organic mushroom mycelium, with a full spectrum of constituents: >55% (550 mg/serving) polysaccharides and an array of extracellular constituents, including prebiotics for the microbiome, essential for Supporting Natural Immunity. Host Defense® is the 1 Best-Selling Mushroom Brand in the U.S.: The Highest Quality and Scientifically Validated Guaranteed, accurate identity of each mushroom Non-GMO verified ingredients Heat treated to proper temperature to ensure safety & bioavailability Produced under the direct supervision of Paul Stamets, D.Sc.