Mental Health Home > Quetiapine XR

As part of a group of drugs known as "atypical antipsychotic" medications, quetiapine XR is approved to treat schizophrenia, bipolar disorder, and depression. This prescription medication works by lessening or blocking certain chemicals in the brain that can become elevated in people with these conditions. Quetiapine XR is not suitable for everyone, and you should talk to your healthcare provider (prior to taking the medication) about your medical history and any other medications you are taking.

What Is Quetiapine XR?

Quetiapine XR (Seroquel XR®) is a prescription medication that is used to treat schizophrenia or bipolar disorder. When combined with an antidepressant, it is also approved for treating depression. It is a long-acting, extended-release medication that is taken just once a day.

Who Makes Quetiapine XR?

Quetiapine XR is manufactured by AstraZeneca Pharmaceuticals.
(Click What Is Quetiapine XR Used For? for more information on what quetiapine XR is used for, including possible off-label uses.)

How Does Quetiapine XR Work?

Quetiapine XR is not a cure for schizophrenia or bipolar disorder. It only helps to control symptoms (see Symptoms of Schizophrenia or Bipolar Disorder Symptoms).
Quetiapine XR belongs to a group of medications called second-generation (or atypical) antipsychotic medications. It is not entirely known how quetiapine XR works for treating schizophrenia. However, it is known that quetiapine XR blocks or lessens the effects of several chemicals in the brain. These brain chemicals (such as dopamine and serotonin) may be elevated in people with schizophrenia or bipolar disorder.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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