--Drowsiness, ataxia, fatigue, dizziness, confusion, increased salivation, muscle weakness, vertigo, headache, depression, nervousness, blurred vision, insomnia, respiratory depression, gastrointestinal disturbances, changes in libido, impotence, hallucinations, anterograde amnesia, skin reactions, dysarthria, tremor, changes in appetite, weight changes, urinary retention, blood disorders, jaundice, sexual dysfunction, menstrual irregularities, growth retardation in children, neonatal withdrawal syndrome, dependence, paradoxical increase in aggression, irritability, agitation, anxiety, restlessness, sleep disturbances, nightmares, abnormal dreams, withdrawal symptoms, decreased alertness.