Abnormal behaviour eg, abnormal dreams, confusion, constipation, dizziness, dyskinesias, fatigue, hallucinations, headache, hypotension, inappropriate antidiuretic hormone secretion, insomnia, nausea, peripheral oedema, pneumonia; somnolence, visual impairment including diplopia, blurred vision & reduced visual acuity, vomiting, decreased wt including decreased appetite, drug w/drawal syndrome.