Olanzapine (Zyprexa) is one of a group of newer antipsychotic medications called atypical antipsychotics. These types of medication are seen as a better choice for people with Alzheimer's. Olanzapine is not approved for the treatment of elderly patients with dementia-related psychosis. In this article I look at the reasons for this and give more information about Olanzapine (Zyprexa).