Now Foods Astragalus Root (Huang qi) has been used as a popular herbal tonic in China for many centuries. Some of the known active components include flavonoids, free amino acids, trace minerals and polyphenols. Now Foods Astragalus Plus Extract is based upon an ancient Chinese formula which has been historically used for tonifying and strengthening the body's defenses.Astragalus Root (Huang qi) has been used as a popular herbal tonic in China for many centuries. Some of the known active components include flavonoids, free amino acids, trace minerals and polyphenols.Ingredients Astragalus Root Free From Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.