<unk>  is a anticonvulsant ,  central nervous system agent and hydantoin that is FDA approved for the treatment of generalized tonic-clonic status epilepticus and prevention and treatment of seizures occurring during neurosurgery. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include pruritus, ataxia, dizziness, headache, paresthesia, somnolence and nystagmus.
Fosphenytoin
Phenytoin 
Mephenytoin
Mesuximide
Levetiracetam 
Lamotrigine
Methsuximide
Ethosuximide