Zyprexa (olanzapine) is an atypical antipsychotic medication. Exactly how it works is not known. It is thought to work by changing the actions of certain chemicals in the brain.
Zyprexa is used to treat the symptoms of psychotic conditions such as schizophrenia and bipolar disorder (manic depression) in adults and children who are at least 13 years old.
Zyprexa is sometimes used together with other antipsychotic medications or antidepressants.
Zyprexa may also be used for other purposes not listed in this medication guide.