Whether or not you can eat American ginseng after 7 or 8 years needs to be decided according to whether or not it has mold, deterioration, and whether or not it has passed its shelf life and other factors. American ginseng is sweet, bitter and cool in nature, belonging to the heart, lung and kidney meridians, and its effects are to replenish qi and nourish yin, clearing heat and generating fluids. Clinically, it is mainly used for the treatment of deficiency of qi and yin deficiency resulting in deficiency heat and tiredness, coughing, phlegm and blood, internal heat and thirst (internal heat accompanied by symptoms such as eating, drinking and urinating), dry mouth and throat, and so on. Caution should be taken when there is deficiency of yang, obstruction of cold and dampness, or when there is dampness-heat and fire. Its contraindication is anti-veratrum. If you need to use the drug, it is recommended to go to the hospital under the guidance of a professional physician to take, do not take on their own, so as not to delay the condition.