Seroquel vs. Zyprexa

Are Seroquel and Zyprexa the Same Thing?

Seroquel (quetiapine) and Zyprexa (olanzapine) are antipsychotic medications used to treat schizophrenia and bipolar disorder.

Seroquel is also used in the treatment of major depression.

What Are Possible Side Effects of Seroquel?

Common side effects of Seroquel include:

  • fever,
  • hot flashes,
  • sensitivity to heat,
  • sweating,
  • headache,
  • nervousness,
  • irritability,
  • nausea,
  • sleep problems (insomnia),
  • changes in appetite or changes in weight,
  • changes in menstrual perdiods,
  • and temporary hair loss.

What Are Possible Side Effects of Zyprexa?

Common side effects of Zyprexa include:

  • akathisia (an inability to sit still),
  • constipation,
  • headache,
  • dizziness,
  • lightheadedness,
  • drowsiness,
  • tiredness,
  • restlessness,
  • weight gain (more likely in teenagers),
  • increased appetite,
  • memory problems,
  • stomach pain or upset,
  • loss of bladder control,
  • back pain,
  • pain in your arms or legs,
  • numbness or tingly feeling,
  • breast swelling or discharge (in women or men),
  • dry mouth, or
  • missed menstrual periods.

What Is Seroquel?

Dosing preparations are 25, 50, 100, 200, 300, and 400 mg tablets.

What Is Zyprexa?

Zyprexa (olanzapine) is an atypical antipsychotic medication used to treat schizophrenia and manic episodes of bipolar disorder.

What Drugs Interact With Seroquel?

Seroquel may interact with many different drugs. Tell your doctor all medications and supplements you use.

What Drugs Interact With Zyprexa?

Zyprexa may interact with other medicines that make you sleepy (such as cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety), heart or blood pressure medications, medications to treat Parkinson's disease, seizure medications.

Zyprexa may also interact with omeprazole or rifampin.

How Should Seroquel Be Taken?

Dosing preparations are 25, 50, 100, 200, 300, and 400 mg tablets.

How Should Zyprexa Be Taken?

Oral Zyprexa should be administered on a once-a-day schedule without regard to meals, generally beginning with a 5 to 10 mg initial dose, with a target dose of 10 mg/day within several days.


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RxList. Seroquel Side Effects Drug Center.
RxList. Zyprexa Side Effects Drug Center.

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