Potential neurotoxicity (observed in animal models but not established in humans). Visual disturbances may be associated with ophthalmologic toxicities, may be permanent. Use with caution in history of psychosis (psychotic/agitated reactions may occur more frequently), depression, or behavioral problems. Use with caution in renal impairment (CrCl <60 mL/minute). May cause increase in seizure frequency in some patients (use with particular caution in myoclonic seizures). Effects with other sedative drugs or ethanol may be potentiated. Use with caution in the elderly. Anticonvulsants should not be discontinued abruptly.