The functions of Chai Hu Shuo Liver Essence are to relieve liver stagnation (treating depression by unblocking the liver’s qi), and to move qi to relieve pain (relieving pain by regulating the body’s qi). It is used for treating the symptoms of liver qi stagnation (the lack of smooth flow of liver qi), such as pain in the ribs and wounds, tightness in the chest, frequent sighing, depression or irritability, belching (hiccups), and fullness in the epigastrium (abdomen). Chai Hu Shun Liver Essence is composed of Chai Hu, Citrus aurantium dulcis, Pericarpium Citri Reticulatae, Rhizoma Ligustici Chuanxiong, Radix Paeoniae Alba, Radix et Rhizoma Cyperi, Radix et Rhizoma Glycyrrhizae. In this formula, Chai Hu can regulate Liver Qi and relieve stagnation; Xiang Fu can relieve Liver Qi and relieve pain; Chuan Xiong can promote Qi and blood circulation, open stagnation and relieve pain; Hovenia Hortus can promote Qi and relieve pain to regulate the Liver and Spleen; Chen Pi can regulate Qi and move stagnation to harmonize the Stomach. Paeonia lactiflora can nourish Blood and soften the Liver (nourishing the Blood and softening the Liver), and relieve pain (relieving urgent pain symptoms); Glycyrrhiza glabra can harmonize all herbs (harmonizing the medicinal properties of different herbs). The combination of these herbs can relieve the liver, relieve depression, move Qi and relieve pain. The adverse reactions and contraindications of Chai Hu Shu Hepatosan are not clear. This formula should not be taken for a prolonged period of time and should be used with caution in pregnant women. Before taking this formula, it is necessary to consult a doctor for diagnosis and take it under the doctor’s guidance, do not blindly self-medicate.