Radix Panax Ginseng has the effects of nourishing Yin and detoxifying, clearing heat and cooling blood (relieving blood heat by clearing heat), while Radix Astragali can replenish Qi and strengthen the spleen (replenishing Qi and strengthening the spleen), elevate Yang Qi, diuretics and reduce swelling (promoting urinary discharge and reducing swelling), consolidate the epidermis (stabilizing the surface of the muscle), and support the production of muscles by toxin (discharging poisonous evils and promoting muscular growth and healing of wounds). There is no contraindication to their use and they can be used together. Xuan Shen can clear heat and cool the blood, treating the pericardium after the invasion of warm evils, warm poisonous spots (warm-heat poisonous evils invading the body resulting in spots and plaques on the skin); treating dry stools and irritability after heat illnesses injuring the yin; and treating sore throat, scrofula (mainly referring to tuberculosis of the lymph nodes in the neck), carbuncle, swelling, and poisonous sores due to the overflowing of heat and poisonous evils. Xuan Shen cannot be taken if there is deficiency of spleen and stomach (spleen and stomach are weak and cold), and it cannot be taken together with quatrefoil Astragalus can be used to treat weakness, lethargy and poor appetite in spleen qi deficiency, wheezing and coughing and spontaneous sweating (involuntary sweating during the day, aggravated by the slightest movement of sweating) in lung qi deficiency, and non-healing of sores and ulcers in qi and blood deficiency. It should not be taken in cases of solid heat. There are no contraindications to combining these two drugs, and they can be used together for diseases that see both indications. However, because the adverse effects of these two drugs are not clear, taking these two drugs need the guidance and help of a doctor.