trials. Headache (18%), somnolence (14% to 31%), dizziness / lightheadedness (8% to 16%), akathisia (8% to 10%), anxiety (5%), asthenia (5%), insomnia (3%), hypesthesia (2%), speech disorder (2%), agitation , hostility , paresthesia , confusion , vertigo , hyperkinesia , abnormal gait, oculogyric crisis , hypesthesia , ataxia , amnesia , cogwheel