Polygonatum is the traditional Chinese medicine, which is the plants drying tuber ofthe liliaceous. It has the function of tonifying spleen, runfei, invigorating qi and nourishingyin, and used to cure the disease of nourish Yin deficiency, dryness of lung, dry cough,deficiency of the kidney, thirst, deficiency of the spleen and stomach and so on. Modernpharmaceutical research prove that it can enhance immunity, reduce the blood lipids andglucose level, antibacterial, antitumor, antiviral and so on.In the fu...