Taking Chaihu Shu Liver Pills will not cause excessive phlegm if the medication is used appropriately. There are no adverse effects of Chaihu Shu Liver Pill on excessive phlegm. Excessive phlegm may be caused by other factors. It is recommended to go to the hospital and adjust the medication under the guidance of the doctor. Chai Hu Shu Liver Pill has the efficacy of dredging the liver and regulating the stagnation of liver qi (regulating the stagnation of liver qi), eliminating flatulence and relieving pain, and is mainly used for the treatment of symptoms such as liver qi discomfort, lumpiness in the chest, stagnant and unclear food, and vomiting of acidic water. Adverse reactions and contraindications are not known. This product should be taken with caution in pregnant women. Avoid cold, raw and greasy foods that are difficult to digest. If symptoms are not relieved or other discomfort occurs after 3 days of taking the drug, go to the hospital for consultation. The drug should be taken under the guidance of a doctor, not self-medication.