Now Beta 1, 3/1, 6-D-Glucan supports normal immune cell activity. A bioactive carbohydrate derived from the cell wall of Saccharomyces cerevisiae, commonly known as Bakers' yeast. Yeast-derived Beta-Glucan can interact with certain immune cells, including those present in the gut-associated lymphoid tissue (GALT). The GALT exists in the intestinal tract and is known to play a critical role in healthy immune system function. Beta-Glucan is blended with Maitake Mushrooms for complementary support. Recommneded Use: Take 1 capsule 1 to 2 times daily, or as directed by a healthcare professional. Store in a cool, dry place after opening.