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

Most common
Somnolence (up to 18%)
Dizziness (up to 11%)
Dry mouth (up to 9%)
Constipation (up to 8%)

Invega

Most common
Insomnia (up to 15%)
Extrapyramidal symptoms (up to 13%)
Akathisia (up to 12%)
Headache (up to 10%)

Seroquel vs. Invega Dosage

Seroquel

Dosage
Dosage Table
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

Dosage
Dosage Table
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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