There is no best match for American ginseng. Many kinds of Chinese medicines can be combined with this medicine to treat diseases, such as Radix Rehmanniae Praeparata, Mulberry Leaves, Maitong, and so on. 1. Radix Rehmanniae Praeparata (生地黄)：Pairing with Radix et Rhizoma Ginseng (西洋参), it can replenish lung qi and nourish lung yin, targeting at lung qi and yin deficiencies (deficiency of both qi and yin fluids), such as dry cough with little phlegm, blood in phlegm, spontaneous sweating (involuntary sweating during the daytime, which is aggravated by the slightest movement), fatigue (mental exhaustion, physical weakness), heartburn, and so on. 2. Mulberry Leaf: Xiyangshen and this medicine can be used together to replenish Qi and benefit Yin, clearing and draining lung-heat, targeting symptoms such as dry throat and thirst, hoarse cough and hemoptysis caused by lung-heat. 3. Maitong: Pairing with Radix Panax Ginseng can replenish Qi, nourish Yin and moisten the lungs (nourishing the lungs by replenishing the lung fluid), targeting symptoms such as irritable thirst and thirst caused by exogenous fever, heat injury to Qi and Yin, and depletion of fluid in the lungs and stomach. There are many other suitable combinations of American ginseng, and it is advisable to consult a doctor for specific medication.