Seroquel vs. Invega
See how Seroquel and Invega compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Seroquel treats schizophrenia and both the manic and depressive episodes of bipolar I disorder, while Invega is approved only for schizophrenia and schizoaffective disorder.
Seroquel usually needs a multi-day dose increase and is taken once or twice daily, while Invega is typically started at a fixed dose taken once a day with no day-by-day ramp-up.
Both carry the same boxed warning about increased mortality in elderly patients with dementia-related psychosis, along with metabolic and QT prolongation risks.
Seroquel vs. Invega Drug Summary
Seroquel
Seroquel (quetiapine) is an atypical antipsychotic used to treat schizophrenia and both the manic and depressive episodes of bipolar I disorder, and it is also approved as an add-on treatment for major depressive disorder. The immediate-release tablet is taken two or three times a day and the extended-release version once daily, with the dose raised gradually over the first several days.
Invega
Invega (paliperidone) is an atypical antipsychotic used to treat schizophrenia in adults and adolescents and schizoaffective disorder in adults. It is taken as a once-daily extended-release tablet, usually starting at a set dose that can be adjusted after a few days rather than climbed step by step.
Seroquel vs. Invega Side Effects
Seroquel
Invega
Seroquel vs. Invega Dosage
Seroquel
Invega
| STAGE | DOSE | WHEN |
| Starting dose | 25 mg twice daily | Day 1 |
| Maximum dose | 150-750 mg/day | Day 4 |
| Dose changes | 4 increases | Every day |
| STAGE | DOSE | WHEN |
| Starting dose | 3 mg once daily | At the start |
| Maximum dose | 12 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Seroquel
| STAGE | DOSE | WHEN |
| Starting dose | 25 mg twice daily | Day 1 |
| Maximum dose | 150-750 mg/day | Day 4 |
| Dose changes | 4 increases | Every day |
Invega
| STAGE | DOSE | WHEN |
| Starting dose | 3 mg once daily | At the start |
| Maximum dose | 12 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Seroquel vs. Invega Indications
Seroquel
Seroquel is FDA-approved for schizophrenia in adults and adolescents, and for both manic and depressive episodes of bipolar I disorder. It is also approved as an add-on to antidepressants for major depressive disorder in adults. Some clinicians use low doses off-label for anxiety or insomnia, which is not an FDA-approved use.
Schizophrenia (adults and adolescents 13-17)
Bipolar I disorder, manic episodes (alone or with lithium/divalproex)
Bipolar I disorder, depressive episodes (adults)
Add-on treatment for major depressive disorder (adults, XR)
Invega
Invega is FDA-approved for schizophrenia in adults and adolescents 12 and older, and for schizoaffective disorder in adults, either alone or alongside mood stabilizers or antidepressants. It is not approved for bipolar disorder or depression on its own, and it is not approved for dementia-related psychosis. Long-acting injectable versions exist for ongoing schizophrenia treatment.
Schizophrenia (adults and adolescents 12-17)
Schizoaffective disorder, monotherapy (adults)
Schizoaffective disorder, adjunct to mood stabilizers or antidepressants
Not approved for dementia-related psychosis
Seroquel vs. Invega Pros and Cons
Seroquel
Seroquel covers a wider range of approved conditions, including bipolar mania, bipolar depression, and adjunct MDD treatment, not just psychotic disorders. Its sedating profile can be useful for patients with sleep disruption but means more daytime drowsiness for many. A low-cost generic (quetiapine) is widely available, unlike Invega's branded extended-release tablet.
Pros
Approved for bipolar mania and bipolar depression, not just schizophrenia
Also approved as an add-on for major depressive disorder
Generic quetiapine often costs $150 to $500 a month without insurance
Sedating effect can help with sleep disturbance tied to mood symptoms
Cons
Immediate-release form requires two or three doses a day
Multi-day titration schedule needed to reach an effective dose
Higher rates of dry mouth, dizziness, and constipation than Invega
Weight gain and metabolic changes are common concerns with long-term use
Invega
Invega's once-daily fixed-dose design and OROS tablet mean less day-to-day dose juggling than immediate-release Seroquel. It is limited to schizophrenia-spectrum conditions and does not treat bipolar mania or depression. Long-acting injectable versions exist for patients who struggle with daily pills, but pricing runs well above typical quetiapine costs.
Pros
Once-daily dosing with a simple fixed starting dose, no daily ramp-up
Long-acting injectable options (monthly, every 3 months, or every 6 months)
Approved for schizophrenia down to age 12
Renal dose adjustments are clearly defined on the label
Cons
Not approved for bipolar disorder or depression
Higher rates of akathisia, extrapyramidal symptoms, and insomnia
Cost can run $400 to $4,200 a month depending on dose and formulation
Tablet shell may appear intact in stool, which can concern patients
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