Xuan Shen has the effects of clearing heat and cooling blood, nourishing Yin and lowering fire, etc. It is difficult to fully analyze the active ingredients in water, and the medicinal effects it can exert are limited. Xuan Shen has the efficacy of clearing heat and cooling blood (relieving blood heat by clearing heat), nourishing yin and reducing fire (nourishing yin essence and lowering fire), and detoxifying and dispersing knots. It can be used for treating fever at night and heartburn and thirst caused by warm-heat diseases; dry throat and thirst, heartburn and insomnia caused by heat diseases and injury to yin; tidal fever caused by deficiency of yin of the lungs and kidneys (a burst of fever and feeling that the heat is penetrating outward from the bones); and sore throat caused by wind-heat sensation from the outside. Xuan Shen should not be taken by those who have deficiency of spleen and stomach (spleen and stomach weak and cold), those who have little food and diarrhea, and Xuan Shen should not be used with quatrefoil. Taking Radix Panax Ginseng should be under the guidance of a Chinese medicine practitioner, and individuals should not take the medicine on their own to avoid causing adverse reactions.