The main antiepileptic drugs are carbamazepine, sodium valproate, sodium phenytoin and phenobarbital: 1. Carbamazepine: the most effective for psychomotor seizures, effective for grand mal seizures and focal seizures, reducing abnormal psychiatric symptoms, especially suitable for epilepsy with psychiatric symptoms, also effective for trigeminal neuralgia and glossopharyngeal neuralgia. The main side effects are dizziness, drowsiness, fatigue, nausea, vomiting, occasional granulocytopenia, reversible thrombocytopenia, even aplastic anemia, and toxic hepatitis, etc. It can also cause rash. Sodium valproate: It is a broad-spectrum antiepileptic drug, effective for all types of epilepsy. The common side effects are gastrointestinal reactions, lymphocytosis, thrombocytopenia, hair loss, sleepiness, weakness, ataxia, and hepatotoxicity in a few patients. 3, phenobarbital: mainly used for tonic clonic seizures and clonic seizures, can be used for other partial seizures, but not for simple aphasic petit mal seizures, but also for the treatment of neonatal convulsions and the prevention of convulsive relapse. It is a relatively safe antiepileptic drug and is inexpensive. Side effects are drowsiness and sleepiness, more commonly excitement and hyperactivity in roe deer. 4, phenytoin sodium: it is used for tonic clonic hair visit group, tonic seizures and partial seizures, not for loss of consciousness seizures, it has more adverse gua, and more toxic reactions related to drug dose, such as headache, dizziness, nystagmus, insomnia, confusion, motor disorders, blurred vision and even increased seizures. The adverse effects can only disappear after the drug is reduced and stopped. Chronic toxic reactions can occur with long-term use, causing gum hyperplasia, skin roughness, hirsutism, chondromalacia, and immune dysfunction. Chronic toxicity can not make memory loss, inattention, cerebellar atrophy, speech disorders, personality changes, etc. Its allergic reactions are skin itching, rash, impaired liver function, thrombocytopenia, anemia.