From Tibet and Nepal, China and Siberia and Northern Europe, cross culturally each mushroom in Host Defense Breathe has been used to support the breath that is life. Centuries of use and current scientific research suggest that Cordyceps, Reishi and Chaga may provide a wide range of nutrients to support each breath we take allowing for increased ease and oxygenation. Host Defense Breathe uses activated, freeze-dried, Certified Organic mycelium, with a full spectrum of constituents: polysaccharides (beta glucans, arabinoxylane, glucose, xylose, galactose, cordycepic acid), cordycepin, glycoproteins, ergosterols, triterpenoids and other myco-nutrients, which are essential for Supporting Natural Immunity.