 Anticonvulsants suppress epileptic seizures , but they neither cure nor prevent the development of seizure susceptibility . The development of epilepsy ( epileptogenesis ) is a process that is poorly understood . A few anticonvulsants ( valproate , levetiracetam and benzodiazepines ) have shown antiepileptogenic properties in animal models of epileptogenesis . However , no anticonvulsant has ever achieved this in a clinical trial in humans . The ketogenic diet has been found to have antiepileptogenic properties in rats . 
