Astragaloside IV is a bioactive saponin first isolated from the dried plant roots of the genus Astragalus, which is used in traditional Chinese medicine. It dose-dependently inhibits human adenovirus type 3 (HAdV-3) in A549 cells (IC50 = 23 µM; LC50 = 865 µM). It inhibits replication of HAdV-3 and decreases HAdV-3-induced apoptosis. It has diverse protective effects for the cardiovascular, immune, digestive, and nervous systems.1,3 In particular, it reduces myocardial infarct size in dogs when administered prior to coronary ligation and reduces reperfusion arrhythmias in isolated rat hearts.
1. It has the effect on  relieving stresses and protecting the body against various stresses,including physical, mental, or emotional stress;
2. It has the function of enhancing immunity, protecting the body from diseases such as cancer and diabetes;
3. It contains antioxidants, which protect cells against damage caused by free radicals;
4. It is used to protect and support the immune system, antibacterial, and antiinflammatory, for preventing colds and upper respiratory infections;
5. It has the effect on lowering blood pressure, treating diabetes and protecting the liver.
6. Astragalus can increase energy and endurance, enhance the immune system and aid in the recovery from chronic stress or prolonged illness.
7.Studies have documented that Astragalus boosts activity of several kinds of white blood cells and increases production of antibodies and interferon, the body own natural anti-viral agent.