The correct way to make water with American ginseng is to take thin slices of the right amount and brew it with boiling water. American ginseng is the dried root of American ginseng, a plant of the family Wujiaceae. It is sweet, slightly bitter and cool in nature. It belongs to the heart, lung and kidney meridians. It has the effect of replenishing qi and nourishing yin, clearing heat and generating fluids. It is used in treating deficiency of qi and yin, deficiency heat, internal heat and thirst (internal heat accompanied by symptoms such as eating, drinking and urinating), dry mouth and throat. When taking American ginseng tablets, you can take thin slices of appropriate amount, with boiling water for thirty minutes, but the active ingredients of the brewing drug precipitation is limited, so American ginseng in water is only used as a substitute for tea, and can not be used in place of conventional treatment. It is not recommended to take it where there is deficiency of yang in the middle, obstruction of cold and dampness in the middle (cold and dampness blocking the spleen and stomach in the middle), and all the evidence of solidity and fire, such as qi stagnation and fire, is contraindicated. It is recommended to use this medicine under the guidance of a Chinese medicine practitioner to avoid delays.