The effects of American ginseng are to tonify qi and nourish yin, clear heat and promote the production of fluids. It is used to treat various diseases caused by deficiency of both qi and yin (deficiency of both qi and yin). Xiyangshen has a sweet, slightly bitter taste and cool nature, and goes to the heart, lung and kidney meridians. It can tonify qi and nourish yin, clear heat and promote the production of body fluid. 1. To replenish qi and nourish yin: western ginseng can be used for lung yin deficiency and lung qi deficiency. It can also be used in combination with other medicines such as forsythia, bamboo, salvia and bezoar, etc. It can also be used in the treatment of lung yin deficiency, phlegm deficiency, dry cough, dry phlegm, dry throat and thirst. 2. Clearing heat and promoting generation of body fluid: For dry mouth and thirst, insomnia, uneasiness of mind and spirit, less urination caused by deficiency of yin in heart and lungs, American ginseng can also be used to regulate the condition, and it can be combined with lily, maitake, Zhimu, and dendrobium to get better curative effect. Note that American ginseng is contraindicated in cases of deficiency of middle yang, obstruction of cold and dampness, and Qi depression and fire, etc. Do not take American ginseng together with medicines containing veratrum and wulin, in order to avoid toxic side-effects. Radix Panax Ginseng should be taken under the guidance of a Chinese medicine practitioner to avoid the wrong medicine and damage to the body.