There is no such thing as what medicines Zuojin Wan is good with. Depending on the patient’s condition, Zuojin Wan can be combined with other medicines, such as Squid Bone, Calcined Corrugated Bone and Siwei San. If acid swallowing (swallowing the acid in the stomach that rushes up to the oropharynx) is serious, Squid Bone and Calcined Corrugated Bone can be added to suppress acidity and relieve pain; if there is much pain in the abdomen and ribs, Four Reversible Powders can be combined with Zuojin Pills to strengthen the function of dredging the liver and harmonizing the stomach. Zuo Jin Wan, composed of Rhizoma Coptidis and Cornu Cervi Pantotrichum. It has the effects of diarrhea, detoxifying the liver, harmonizing the stomach and relieving pain. It is used in treating liver-fire in the stomach (the fire produced by the liver invades the stomach), pain in the epigastric region, bitter and noisy mouth (the stomach has a sensation similar to hunger, emptiness with burning), vomiting of acid, dislike of hot drinks, etc. It is also used in treating coldness of the spleen and the stomach. It should be noted that it should be used with caution in cases of stomach pain due to deficiency of spleen and stomach (weakness and coldness of spleen and stomach) and dystocia (pain in the area of coercion and ribs) due to insufficiency of liver and yin. This medicine should be taken in a relaxed mood. If medication is needed, it should be diagnosed by a doctor and standardized treatment should be followed in accordance with the doctor’s instructions.