Traditional Chinese herbalists have been using Astragalus root for centuries as a tonic for the prevention and treatment of chronic immune-suppressing illnesses. Astragalus root is non-toxic and can be used on a long term regular basis. May be useful for but not limited to:Prevention against recurring colds, bronchitis & flu.Supporting long term recovery from debilitating, viral infections.A great immune booster when combined with good nutrition & rest.Its antiviral properties give relief from kidney & bladder infections, chronic fatigue syndrome, glandular fever & Ross River fever.