Host Defense Turkey Tail contains activated, freeze-dried, Certified Organic mycelium, providing a complex array of synergistic constituents: a full spectrum of polysaccharides (beta glucans, arabinoxylanes, glucose, xylose, galactose and mannose), glycoproteins, ergosterols, triterpenoids and other myco-nutrients, which are essential for Supporting Natural Immunity. The SourceEach mushroom species collected by Paul Stamets from the old growth forests of the Pacific Northwest is sustainably harvested. The ecosystem remains intact and unharmed. We carefully culture the mycelium for the Host Defense products on the Fungi Perfecti Farm in a way that maintains the lowest P Value possible. This creates identical genetic matches to the mycelium found in their native habitats, ensuring the provenance and genetic vitality of each strain. Our chain-of-custody guarantees the efficacy and viability of the species in the Host Defense line: 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.