See<unk>  toxicity for overdose
^Provides a rough guide only; neither sensitive nor specific
V-Fib (IV)
Hypotension (IV)
CV collapse (IV)
AV conduction disturbance (IV)
Hepatotoxicity
Thrombocytopenia
Leukopenia
Agranulocytosis
Pancytopenia
Megaloblastic anemia
Stevens-Johnson syndrome
Toxic epidermal necrolysis
Drug rash (with eosinophilia)
Tissue necrosis (IV)
Purple glove syndrome (IV)
Anaphylaxis
Lymphoma
Lupus
Osteomalacia
Toxic delirium
SI
Periarteritis nodosa
Withdrawal seizures with abrupt discontinuation
Nausea/vomiting
Rash
Nystagmus
Ataxia
Slurred speech
Dizziness
Confusion
Paresthesia
Blurred vision
Somnolence
Constipation
headache
Insomnia
Gingival hyperplasia
Tremor
Lymphadenopathy
Coarse facies
Hyperglycemia
Osteomalacia
Phlebitis (IV)
Peyronie disease
Taste change
Phenytoin
Carbamazepine
Levetiracetam
Phenobarbital
Oxcarbazepine
Fosphenytoin
Ethosuximide
Lamotrigine