The name of the drug in the title is incorrect; the correct drug name is Xuan Shen. Xuan Shen has the efficacy of clearing heat and cooling blood (relieving blood heat by clearing heat), nourishing yin and lowering fire (nourishing yin essence and lowering fire), and detoxifying and dispersing toxins. Xuan Shen has the efficacy of nourishing yin and lowering fire, cooling blood and detoxifying the toxin (referring to the treatment of blood-heat and toxin embodied in the blood). It is used in treating heat illnesses that injure the body fluids, vexation and thirst, hair spotting, constipation with intestinal dryness, yin deficiency with bone vaporization and laborious heat, sleeplessness at night, vomiting of blood, epistaxis, sore throat, redness of eyes, carbuncle and scrofula (mainly refers to tuberculosis of lymph nodes of the neck). Xuan Shen should not be taken by people with deficiency of cold in the spleen and stomach (spleen and stomach weak and cold), or with scanty food and loose stools (thin and unformed feces). Xuan Shen should not be used in conjunction with quassia. When discomfort occurs, one should consult a doctor in time and choose medication under the guidance of physician’s diagnosis, and should not use medication on one’s own in order to avoid delaying the condition.