There is no so-called eight best combinations of American ginseng, and the combinations are different for different specific conditions of patients. For example, American ginseng is combined with Radix et Rhizoma Dioscoreae; American ginseng is combined with Radix et Rhizoma Maitake. Radix Panax Ginseng is a traditional Chinese medicine, which is the root of Radix Panax Ginseng, a plant of five ginsengs. This traditional Chinese medicine 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 and tiredness, coughing, asthma, phlegm and blood, internal heat and thirst (internal heat accompanied by symptoms such as excessive eating, drinking and urination), dry mouth and throat. This product should not be used in conjunction with Veratrum. It should not be used in cases of deficiency of yang in the middle, obstruction of cold and dampness in the middle, and depression of qi and fire. There is no such thing as the eight best combinations of American ginseng. The combination of American ginseng should be based on the needs of the condition, such as American ginseng with Radix Rehmanniae Praeparata for prolonged coughing due to lung deficiency; American ginseng with Maimendong for coughing due to dryness of the lungs; and American ginseng with Zhimu for heat illnesses of the outside world. If you need to use medication, you need to use it under the guidance of a traditional Chinese medicine practitioner, and should not use medication on your own to avoid adverse effects on your body.