There is no such thing as “the best combination of American ginseng”, it needs to be determined by a professional doctor depending on the diagnosis. American ginseng can be combined with astragalus, maitong, asparagus and so on. Radix Panax Ginseng is sweet and slightly bitter in taste, cool in nature, and belongs to the heart, lung and kidney meridians. It has the effect of tonifying qi and nourishing yin, clearing heat and generating fluids. It is used in treating deficiency of qi and yin, deficiency heat and tiredness, coughing, phlegm and blood, internal heat and thirst (internal heat accompanied by symptoms such as eating, drinking and urinating), and dry mouth and throat. This product is combined with Astragalus, Chinese yam, smallpox pollen and other products that benefit qi and nourish yin (tonifying qi and yin) to produce fluid, and is used for treating thirst and thirst that is caused by qi and yin injuries. Radix Panax Ginseng can be used for the treatment of fever and sweat caused by heat injury to qi and fluids, thirst and heartburn, tiredness and low qi, and pulse counting, etc. It can be used for the treatment of shortness of breath and wheezing caused by fire-heat and depletion of qi and yin in the lungs, and for the treatment of coughing and sputum, or sputum with blood, etc. It should not be combined with Fructus Vulgare, which is used for treating thirst. Radix Panax Ginseng should not be used in conjunction with Veratrum. This product is cold in nature, which can injure Yang and help dampness, so it is not recommended for those with Yang deficiency and cold-dampness obstruction. The adverse effects of this product are not clear. If you need to use the drug, you should use it under the guidance of a doctor, do not blindly self-medication.