Does zyprexa (olanzapine) alone cause difficulty in concentrating and impairment in thinking and judement?

It can: Nervous system side effects have frequently included somnolence, tremor, insomnia, dizziness, speech disorder, abnormal gait, amnesia, paresthesia, apathy, confusion, tremor, akathisia, hypertonia, articulation impairment, incoordination, abnormal dreams, emotional lability, agitation, nervousness, and hostility. Akinesia, alcohol misuse, antisocial reaction, ataxia, CNS stimulation, www.Drugs.Com.