Advanced Immune Support is a proprietary state-of-the-art formula that features arabinogalactan, a high molecular plant polysaccharide, and a dietary nucleotide complex – powerful nutrients that stimulate the immune system. *Advanced Immune Support contains 250 mg. of pharmaceutical grade arabinogalactan. Unlike echinacea, vitamin E and other immune ingredients, this high molecular polysaccharide, extracted from Larix occidentalis, supports a wide range of immunologic activity. *