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Medications and Drugs

Brand Names: Zyprexa, ZyPREXA Relprevv

Generic Name: olanzapine (injection) (Pronunciation: oh LAN za peen)

What is olanzapine injection (Zyprexa, ZyPREXA Relprevv)?

Olanzapine is an antipsychotic medication that affects chemicals in the brain.



What are the possible side effects of olanzapine injection (Zyprexa, ZyPREXA Relprevv)?



  • fast or slow heart rate;
  • feeling like you might pass out;
  • being unable to sit still.

Less serious side effects may include:

  • dizziness, drowsiness;
  • weakness;
  • tremors or shaking;
  • nausea; or
  • pain where the injection was given.


What is the most important information I should know about olanzapine injection (Zyprexa, ZyPREXA Relprevv)?


If possible before you receive olanzapine injection, tell your doctor if you have heart disease, congestive heart failure, a heart rhythm disorder, a history of heart attack or stroke, or if you are also using a sedative such as Valium.




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