Comparing Olanzapine vs Quetiapine
| Olanzapine | Quetiapine |
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| Olanzapine | Quetiapine |
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Prescription only
Olanzapine is an oral antipsychotic that may be used to treat schizophrenia or bipolar disorder. Weight gain is common in people who take olanzapine. Prescribed for Major Depressive Disorder... View more |
Prescription only
Quetiapine is an antipsychotic that calms and sedates, helping to relieve psychotic thoughts and manic and depressive behavior. Sedation, low blood pressure, and weight gain are common side effects... View more |
Related suggestions Depression
Major Depressive Disorder
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| More about Olanzapine | More about Quetiapine | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Olanzapine has an average rating of 5.9 out of 10 from a total of 1072 ratings on Drugs.com. 47% of reviewers reported a positive effect, while 33% reported a negative effect. |
Quetiapine has an average rating of 7.2 out of 10 from a total of 2212 ratings on Drugs.com. 64% of reviewers reported a positive effect, while 18% reported a negative effect. |
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| Drug Class | |||||||||||||||||
| Side Effects | |||||||||||||||||
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See also: olanzapine side effects in more detail. |
See also: quetiapine side effects in more detail. |
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| Generic Availability | |||||||||||||||||
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Lower cost generic |
Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all olanzapine prices |
View all quetiapine prices |
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| Dosage Forms Available | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Zyprexa, Zyprexa Intramuscular, Zyprexa Relprevv, Zyprexa Zydis | Seroquel, Seroquel XR | ||||||||||||||||
| Half Life The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. | |||||||||||||||||
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54 hours |
6 hours |
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| CSA Schedule ** View glossary of terms | |||||||||||||||||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||||||||||
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Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 661 drugs are known to interact with olanzapine:
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A total of 735 drugs are known to interact with quetiapine:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider. |
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| Disease Interactions | |||||||||||||||||
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| First Approval Date | |||||||||||||||||
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September 30, 1996 |
September 26, 1997 |
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| WADA Class View World Anti-Doping Agency classifications. | |||||||||||||||||
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N/A |
N/A |
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| More Information | |||||||||||||||||
| Patient resources | |||||||||||||||||
| Professional Resources | |||||||||||||||||
| Related Treatment Guide | |||||||||||||||||
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** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.