Patients with mild facial muscle spasms will see results in 1 to 2 days after taking carbamazepine, but there are individual differences. Drug therapy can be considered for mild facial muscle spasms. Commonly used drugs include carbamazepine, phenytoin sodium, clonazepam and so on. Carbamazepine will be effective after 1~2 days of taking the drug, and there will be obvious effect after 3~4 days of taking the drug. However, in some patients, once the medication is stopped, the symptoms will come back, so long-term medication may be needed. If after taking the drug for 2~3 years, the patient’s symptoms have always been well controlled and have not flared up again, you can consider reducing or stopping the drug appropriately. Common adverse reactions to carbamazepine are blurred vision, diplopia, nystagmus and other central nervous system reactions, as well as dizziness, fatigue, nausea and vomiting. It is contraindicated in cardiac, hepatic, and renal insufficiency, atrioventricular block, severe blood abnormalities, history of myelosuppression, and in pregnant and lactating women. If the symptoms of facial muscle spasm aggravate, patients are advised to consult a professional doctor in the hospital and choose the appropriate treatment. The drug is used under the guidance of a doctor.