Beta Glucan 1 3 1 6 100mg by Source Naturals Inc. 60 Capsule Beta -glucan is a complex polysaccharide composed of glucose molecules extracted and purified from the cell wall of common baker's yeast Saccharomyces cerevisiae. Beta -glucan is used to maintain or stimulate the effectiveness of the immune system. Animal and human cell culture studies have shown that beta -glucan can stimulate several aspects of immune function such as phagocytosis and interleukin production. Source Naturals Beta-Glucan uses a purification process that removes the mannoproteins and yeast residues that may reduce the effectiveness of beta -glucan. Supplement Facts for 100 mg Capsule Serving Size 1 capsules Amount DV beta -1 3 1 6-Glucan 100 mg Other Ingredients microcrystalline cellulose gelatin (capsule) and colloidal silicon dioxide. Warning If you are pregnant may become pregnant or breastfeeding or if you are taking immunosupressant drugs consult your health care professional before using this product.