The full name of butylphthalide should be butylphthalide soft capsule. Regarding the best time to take medication after cerebral infarction, the manual suggests taking 21 days, but clinically there are also recommended to take 3 months, the specific use of medication should follow the doctor’s instructions. Butylphthalide soft capsule can be used to treat mild and moderate acute ischemic stroke. Patients need to take butylphthalide soft capsule orally on an empty stomach. Patients with severe bleeding tendency and allergy to the composition of butylphthalide soft capsules are prohibited to take. Use with caution in patients with psychiatric symptoms, impaired hepatic or renal function and allergies. Patients are required to monitor transaminases while taking the drug. Patients may experience adverse reactions such as nausea, psychiatric symptoms and abdominal discomfort after taking the drug. Cerebral infarction patients generally in the emergence of cerebral infarction under the guidance of a professional doctor to take butylphthalide soft capsule, the instructions recommended and patients to take 21 days, but clinically there are also recommended to be taken continuously for about 3 months. Specifically according to the doctor’s advice.