How many main types of antiepileptic drugs are commonly used in the clinic?

In the treatment of epilepsy, anti-epileptic drug therapy is still the main means. Drug therapy is based on the therapeutic effect produced can be divided into the treatment of the cause and symptomatic treatment. The drug treatment of epilepsy is a symptomatic treatment, which is aimed at controlling the seizures, improving the symptoms and reducing the condition, so as to protect the patient's brain function from serious damage and improve the patient's quality of life.　　Currently, antiepileptic drugs commonly used in clinical practice are divided into five main categories: ① Barbiturates: such as phenobarbital, deoxyphenobarbital, and methylphenobarbital.　　② Ethylpropionylurea: such as phenytoin sodium, methyltoluin, ethyltoluin and so on.　　③ Succinimides: e.g. ethylsuccinate, phenylsuccinate, methylsuccinate, etc.　　④ Double-chain fatty acids: e.g. valproic acid, sodium valproate, magnesium valproate, epileptic anhydride.　　⑤ Benzodiazepines: e.g. Valium, Nitrovalium, Clonidine, etc.　　Among the above antiepileptic drugs, phenobarbital has the most applications. It is mainly used for epilepsy forced clonic seizures, but also can be used for non-other partial seizures, but also can be used for the treatment of neonatal convulsions and prevention of febrile convulsions recurrence. It is a relatively safe antiepileptic drug.