People with severe depression
and suicidal tendency should avoid this drug. Dizziness, fatigue, headache, lethargy, impairment of memory and learning, impairment of motor functions, slurred speech, decreased physical performance, numbed emotions, reduced alertness, muscle weakness, blurred vision and inattention. Physical dependence. Less common vomiting, hypotension, burning eyes, hallucinations, faintness, gastrointestinal disturbances, nightmares, palpitation, aggression, violence.