Quinidine is in a class of medications called antiarrhythmic medications
Phenytoin is indicated to treat grand mal seizures, complex partial seizures, and to prevent and treat seizures during or following neurosurgery
Other drugs with definite association with DIL include interferon-alpha, minocycline, isoniazid, rifampin, phenytoin, penicillamine, quinidine, phenytoin, methyldopa, chlorpromazine, carbamazepine