This all-encompassing immune support supplement features fructooligosaccharides(FOS), lactoferrin, maitake and shiitake mushrooms, vitamins D, C and zinc. A synergistic blend of foundational nutrients and natural botanicals work to keep your immune system in peak performance. Maitake, a popular Japanese mushroom, has been shown to boost the ability of immune cells and boost immune response. Life is busy enough and you don’t have time to slow down. Be proactive in supporting your immune system.