Bluebonnet's Standardized Astragalus Root Extract Capsules provide a standardized extract of polysaccharides, the most researched active constituents found in astragalus root. A clean and gentle water-based extraction method is employed to capture and preserve astragalus' most valuable components. Available in easy-to-swallow vegetable derived capsules for maximum assimilation/absorption and for a truly vegetarian/vegan formula.