Butylphthalide soft capsule is a drug used to treat mild and moderate acute ischemic stroke. Side effects are less, mainly for liver function abnormality, occasionally dyspepsia, etc., after stopping the drug or symptomatic treatment, the symptoms can disappear. 1. Liver function abnormality: mainly mild elevation of aminotransferases, which can be restored to normal after symptomatic treatment, and no serious liver injury has been reported so far. 2. Digestive function: some patients taking butylphthalide soft capsule may have nausea, abdominal discomfort and other symptoms. When the patient is accompanied by hepatic and renal function impaired people, people with psychiatric symptoms should be cautious of using the drug; allergic to butylphthalide such as skin itching, rash people, people with serious bleeding tendency such as excessive menstruation, gastrointestinal bleeding, coagulation dysfunction, thrombocytopenia and so on are prohibited to use the drug. Butylphthalide soft capsule needs to be used under the guidance of neurologists, do not blindly use the drug.