Host Defense Lion's Mane 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 Source Each mushroom 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 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 Lion's Mane This beautiful species, appearing as a white waterfall of cascading icicles, is found on broad leaf trees and logs. The subject of recent studies on nerve regeneration, Lion's Mane is renowned for providing support to the brain and nervous system.