(1,3)-(1-6) Beta D Glucan is an immune system activator that helps lower your risk of catching colds and can even help fight off cancer cells. It comes from the cell walls of yeast and bacteria and is found in certain grains and mushrooms. You can take beta glucan to bolster your immune system and help improve other markers of health, such as blood pressure, blood sugar, and cholesterol levels. This powerful supplement provides antioxidant support and has an anti-aging effect on the skin.