Beta Glucans are molecules which naturally occur in the cell walls of certain grains such as oats and barley. They are renowned for their immune enhancing properties due to their ability to stimulate the activation of macrophages (immune response cells which engulf invading organisms). HealthAid® Beta Glucan Complex combines the added benefits of Vitamins C, D3 and B12 as well as Selenium, Copper, Zinc and Folate, which are all known to contribute to the normal function of a healthy immune system.