With a legacy that spans millennia Reishi has earned its reputation as mushroom of immortality. Host Defense Reishi is a daily supplement that uses double-extracted Certified Organic 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. Additionally Reishi offers cardiovascular system support help with energy and endurance levels and promotes the body s ability to adjust to stress.