What is quetiapine

Last updated: April 1, 2026

Quick Answer: Quetiapine is an antipsychotic medication used to treat schizophrenia, bipolar disorder, and major depressive disorder. It works by affecting neurotransmitters in the brain to reduce symptoms of these conditions.

Key Facts

What is Quetiapine?

Quetiapine is an atypical antipsychotic medication commonly prescribed to treat various psychiatric conditions. It works by modulating the activity of neurotransmitters in the brain, particularly dopamine and serotonin, which are thought to be involved in the development of psychotic symptoms and mood disorders.

FDA Approval and History

Quetiapine was first approved by the Food and Drug Administration in 1997 under the brand name Seroquel. Since then, it has become widely used in psychiatric treatment due to its efficacy and relatively favorable side effect profile compared to earlier generation antipsychotics. The medication is available in immediate-release and extended-release formulations.

Medical Uses

Quetiapine is prescribed for several psychiatric conditions, including:

How It Works

Quetiapine functions as an antagonist to dopamine and serotonin receptors in the brain. By blocking these receptors, it helps reduce the excessive neurotransmitter activity thought to cause psychiatric symptoms. The medication's mechanism differs from older antipsychotics, resulting in fewer movement disorders.

Side Effects and Considerations

Common side effects include sedation, dizziness, orthostatic hypotension, and weight gain. Some patients may experience metabolic changes including increased blood sugar and cholesterol levels. Regular monitoring by healthcare providers is essential, including periodic checks of weight, blood glucose, and lipid levels to ensure safe use.

Related Questions

What is the difference between quetiapine and other antipsychotics?

Quetiapine is an atypical antipsychotic with a different receptor binding profile than older typical antipsychotics, resulting in fewer extrapyramidal side effects. However, it may cause more weight gain and metabolic changes than some other atypical antipsychotics.

What is the typical dosage of quetiapine?

Quetiapine dosage typically ranges from 150 to 800 mg daily in divided doses. A healthcare provider determines the appropriate dose based on individual response and tolerance, usually starting with a lower dose and gradually increasing.

Can quetiapine be used for insomnia or anxiety?

Quetiapine is sometimes prescribed off-label for insomnia and anxiety disorders due to its sedating effects. However, off-label use should only occur under medical supervision with careful monitoring for side effects and efficacy.

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Sources

  1. Wikipedia - Quetiapine CC-BY-SA-4.0
  2. PubChem - National Center for Biotechnology Information Public Domain