Helping People and Planet Made with U.S. Grown Organic Mushroom Mycelium Gluten Free Non GMO Project Verified Dietary Supplement Certified Organic by the Washington State Department of AgricultureFrom the Forest, to our Farm, to YouHost Defense Breathe is a complementary blend of Chaga, Reishi and Cordyceps. Chaga is well known in Eastern Europe and Siberia for its support of skin and lung functioning. Reishi has long been used for centuries in China to support breathing, cardiovascular system and endurance. Cordyceps has long been celebrated in Asia as a lung tonic and energy support. Together, they strengthen respiratory function in normal, healthy individuals.Host Defense Breathe uses activated, optimally dried, Certified Organic mushroom mycelium, with a full spectrum of constituents: >55% (550 mg/serving) polysaccharides and an array of extracellular constituents, including prebiotics for the microbiome, essential for Supporting Natural Immunity.Host Defense is the #1 Best-Selling Mushroom Brand in the U.S.^The Highest Quality and Scientifically Validated Guaranteed, Accurate Identity of Each Mushroom Made with Certified Organic Ingredients Non-GMO Verified Ingredients Heat treated to proper temperature to ensure safety & bioavailability.^Source: SPINSscan Natural / Natural Products Supermarkets > $2MM / Total US - Natural Channel / Mushrooms Ingredient Report / 52 Wks Ending 3/19/2017.