Limonene generally refers to limonene capsule, which has the effect of regulating qi and opening the stomach, anti-inflammatory, etc. Its side effect is to cause dry mouth, dizziness, and fatigue. Limonene capsule has the effect of regulating qi and opening the stomach, anti-inflammatory, analgesic, choleretic and stone dissolving, and is commonly used in the treatment of patients with cholecystitis, cholangitis, gallstones, and post-biliary tract surgery syndrome. Some patients have mild dry mouth after using the drug, and a few patients may have adverse reactions such as dizziness, fatigue, palpitation, constipation, herpes of the mouth and lips. After the use of the drug, if there is a more serious adverse reaction, should promptly seek medical treatment. In addition, it should be noted that the use of pregnant women, lactating women and children is not clear. If the patient has the need to use the drug, it should be used under the guidance of a doctor, do not take it blindly. Prohibit the use of the drug when the properties of the drug have changed.