Certified Organic Astragalus Root (Astragalus membranaceous), cut and sifted. Historically, astragalus has been used in traditional Chinese medicine, usually in combination with other herbs, to support and enhance the immune system. It is still widely used in China for chronic hepatitis and as an adjunctive therapy in cancer. It is also used to prevent and treat common colds and upper respiratory infections. Price breaks for quantities of one pound or more.