Host Defense Chaga 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 ChagaEmbraced by Eurasians for centuries and found throughout boreal forests, Chaga grows primarily on birch trees. Studied and treasured worldwide for its health-enhancing, anti-inflammatory and anti-oxidant properties, Chaga is a unique species, and the focus of recent and ongoing scientific research.