Zyprexa (olanzapine) is an antipsychotic medication that affects 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 purposes not listed in this medication guide.

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  • Zyprexa
  • Note: This page contains side effects data for the generic drug olanzapine. It is possible that some of the dosage forms included below may not apply to the brand name Zyprexa.

    Common side effects of Zyprexa include hyperkinesia, extrapyramidal reaction, dizziness, weakness, drowsiness, dyspepsia, drug-induced parkinson's disease, mask-like face, cogwheel rigidity, akinesia, and xerostomia. Other side effects include weight gain, orthostatic hypotension, back pain, abnormal gait, fever, constipation, myoclonus, and personality disorder. See below for a comprehensive list of adverse effects.
  • Zyprexa dosage information: Zyprexa (olanzapine) tablets, orally disintegrating tablets, injection General dosage information for the active ingredient contained in Zyprexa: Olanzapine (oral tablet, oral tablet, disintegrating, intramuscular powder for injection, intramuscular powder for injection, extended release) Other Zyprexa formulations: Zyprexa Relprevv (olanzapine pamoate) injection Please confirm that the medication forms on the dosage document(s) above are relevant for the specific drug you are interested in.