R R

What Is Seroquel?

Seroquel is a prescription atypical antipsychotic medication containing quetiapine. Immediate-release Seroquel tablets are approved for schizophrenia and certain manic or depressive episodes associated with bipolar disorder. They are taken according to a condition-specific schedule and are available in several strengths. A separate product, Seroquel XR, contains extended-release quetiapine with different dosing instructions and additional indications. Quetiapine affects dopamine and serotonin signaling in the brain and can cause substantial sleepiness and metabolic changes. Seroquel carries boxed warnings for increased mortality in older adults with dementia-related psychosis and suicidal thoughts and behaviors in younger patients receiving antidepressant treatment.

Link to This Resource Page

Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.

To display this...

What Is Seroquel?

Seroquel is a prescription atypical antipsychotic medication containing quetiapine. Immediate-release Seroquel tablets are approved for schizophrenia and certain manic or depressive episodes associated with bipolar disorder. They are taken according to a condition-specific schedule and are available in several strengths. A separate product, Seroquel XR, contains extended-release quetiapine with different dosing instructions and additional indications. Quetiapine affects dopamine and serotonin signaling in the brain and can cause substantial sleepiness and metabolic changes. Seroquel carries boxed warnings for increased mortality in older adults with dementia-related psychosis and suicidal thoughts and behaviors in younger patients receiving antidepressant treatment.

read more about seroquel ...

Copy this HTML:

Copy HTML Copied!

How Does Seroquel Work?

Seroquel affects several neurotransmitter receptors in the central nervous system. Its antipsychotic activity is believed to involve antagonism of dopamine D2 and serotonin 5-HT2A receptors. Quetiapine and its active metabolite also interact with other receptors involved in mood, wakefulness, and blood pressure regulation. Histamine H1 receptor blockade contributes to sedation, while other receptor effects can contribute to dizziness and low blood pressure. These actions can reduce symptoms associated with schizophrenia and bipolar disorder, although the complete therapeutic mechanism is not fully established. Seroquel does not cure the underlying psychiatric condition, and ongoing clinical monitoring is needed during treatment.

What Conditions Does Seroquel Treat?

Immediate-release Seroquel is approved for schizophrenia in adults and adolescents aged 13 through 17 years. It is also approved for acute manic episodes associated with bipolar I disorder in adults and children aged 10 through 17 years. In adults, Seroquel may be used alone or with lithium or divalproex for bipolar mania. Another indication is depressive episodes associated with bipolar disorder in adults. Seroquel XR has additional approved uses, including adjunctive treatment of major depressive disorder in adults. Immediate-release Seroquel is not FDA-approved solely for insomnia or for dementia-related psychosis. Clinicians assess mood symptoms, metabolic risks, cardiovascular history, and other medications before prescribing it.

How Should Seroquel Be Taken?

Seroquel immediate-release tablets are taken orally, with or without food, according to the diagnosis and prescribed schedule. Adults starting treatment for schizophrenia commonly begin at 25 mg twice daily, with gradual dose increases. Adults with bipolar mania commonly begin at 50 mg twice daily, while adults with bipolar depression generally begin at 50 mg once daily at bedtime and increase toward 300 mg daily. Treatment in children and adolescents uses separate titration schedules and maximum doses. Older adults and patients with liver impairment may need lower starting doses and slower adjustments. Seroquel XR is a different formulation and must not be substituted without following its specific dosing instructions.

What Are the Side Effects and Warnings of Seroquel?

Common adverse effects include sleepiness, dizziness, dry mouth, constipation, increased appetite, and weight gain. Serious risks include elevated blood sugar, changes in cholesterol levels, tardive dyskinesia, neuroleptic malignant syndrome, seizures, and orthostatic hypotension. Seroquel carries boxed warnings for increased mortality in older adults with dementia-related psychosis and suicidal thoughts and behaviors in younger patients receiving antidepressant treatment. Long-term quetiapine treatment may also require eye examinations because lens changes were observed in clinical studies, although a causal relationship with cataracts has not been established. Severe muscle rigidity with fever, fainting, abnormal movements, or suicidal thoughts requires prompt medical evaluation.

Common Questions About Seroquel

Is Seroquel the same as quetiapine?

Yes. Seroquel contains immediate-release quetiapine. Seroquel XR contains extended-release quetiapine and has separate administration instructions.

Can Seroquel treat bipolar depression?

Yes. Immediate-release Seroquel is approved for depressive episodes associated with bipolar disorder in adults.

Can Seroquel be used as a sleeping pill?

Seroquel is sometimes prescribed off-label for sleep difficulties, but immediate-release Seroquel is not FDA-approved solely for insomnia and carries significant potential adverse effects.

Can Seroquel cause weight gain?

Yes. Weight gain and changes in blood sugar or cholesterol can occur. Clinicians may recommend regular metabolic monitoring.

References

DailyMed - SEROQUEL (quetiapine) tablet, film coated. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=8ae62aaf-f8c5-417f-baac-0098369ca322. Date Accessed November 6, 2026.

Quetiapine. LiverTox. https://www.ncbi.nlm.nih.gov/books/NBK548616/. Date Accessed November 6, 2026.

Quetiapine. MedlinePlus. https://medlineplus.gov/druginfo/meds/a698019.html. Date Accessed November 6, 2026.

Quetiapine. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Quetiapine. Date Accessed November 6, 2026.

SEROQUEL Medication Guide. DailyMed. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=8ae62aaf-f8c5-417f-baac-0098369ca322. Date Accessed November 6, 2026.