There is no strict definition of how often to stop taking American ginseng. Patients should take it under the guidance of professional physicians according to their conditions. Radix Panax Ginseng is the dried root of Radix et Rhizoma Ginseng, a plant in the family of Wujiaceae, which is used as medicine. Ginseng is sweet, slightly bitter, cool, and can enter the heart, lung and kidney meridians, with the effect of clearing heat and generating fluids, replenishing qi and nourishing yin. It can be clinically used for the treatment of deficiency heat and tiredness, internal heat and thirst (internal heat accompanied by symptoms such as eating, drinking and urinating), qi deficiency and yin deficiency, coughing, sputum and blood, dry mouth and throat, etc. It is usually taken in a decoction as a medicine. Radix Panax Ginseng is usually taken in decoction, its adverse effects are not clear, Radix Panax Ginseng should not be used together with Veratrum. It should not be used with quassia. It is also contraindicated in cases of yang deficiency, cold-dampness obstruction, gas depression and fire, etc. It is also contraindicated in cases of fire depression. American ginseng should be taken under the guidance of traditional Chinese medicine practitioners, and should not be taken blindly by oneself to avoid adverse effects. If there is any discomfort, please consult a doctor in time.