Olanzapine belongs to a group of medicines called antipsychotics. This medicine is used to treat a disease whose symptoms include hearing, seeing or sensing unreal things, to have mistaken beliefs or unusual suspiciousness and becoming withdrawn. Warnings and precautions. Talk to your doctor or pharmacist before you take ZYPREXA VELOTAB. The use of ZYPREXA VELOTAB in elderly patients with dementia is not recommended as it may have serious side effects. Learn about the potential side effects of Zyprexa (olanzapine). Includes common and rare side effects information for consumers and healthcare professionals. Zyprexa (olanzapine) is used to treat the symptoms of psychotic conditions such as schizophrenia and bipolar disorder. Includes Zyprexa side effects, interactions and indications. SIDE EFFECTS. When using ZYPREXA and fluoxetine in combination, also refer to the Adverse Reactions section of the package insert for Symbyax. Clinical Trials Experience Haldol (haloperidol) is an antipsychotic drug that decreases excitement in the brain. Haldol is used to treat psychotic disorders like schizophrenia, to control motor (movement) and verbal (for example, Tourette's syndrome) tics and is used to treat severe behavior problems in children. Toujeo can cause mild or serious side effects. The following list contains some of the key side effects that may occur while taking Toujeo. This list doesn’t include all possible side effects. Bipolar Disorder Medications and Side Effects The First and Most Important Things to Know. Medication really is the most effective treatment available for bipolar disorder. ZYPREXA® Product Monograph Page 4of 9 SERIOUS SIDE EFFECTS, HOW OFTEN THEY HAPPEN AND WHAT TO DO ABOUT THEM Symptom / effect Talk with your doctor or Find patient medical information for Zyprexa Zydis Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.