American ginseng can be soaked in a stainless steel thermos cup, but the effect of soaking is not as effective as decoction, and it is recommended to be used under the guidance of a doctor and with a prescription. American ginseng is a qi tonic under the classification of deficiency tonic, belonging to the lung, heart, kidney and spleen meridians. It is sweet, slightly bitter and cool in nature. It has the effects of tonifying qi and nourishing yin, clearing heat and generating body fluid. This product can be used in the treatment of qi and yin deficiency, symptoms of fatigue (mental exhaustion, physical weakness), dry stools, shortness of breath, etc., can be combined with maitake, schizandra, etc.; used in the treatment of lung qi deficiency, lung yin deficiency, symptoms of shortness of breath and wheezing, blood in sputum, coughing phlegm, etc., can be combined with yuzhuang, chuanbeimu, etc.. It is used in treating palpitation (rapid heartbeat, often accompanied by panic), heart pain and insomnia with deficiency of both qi and yin (deficiency of both qi and yin), and can be combined with licorice and Radix et Rhizoma Glycyrrhizae. This product should not be used in combination with quinquefoil and wulingzhi. The combination should be made under the supervision of a doctor.