AntipsychoticPrescription only
Quetiapine
Tablet
Quick Summary
Quetiapine balances brain chemicals such as dopamine and serotonin.
Schizophrenia
Bipolar disorder
Medical Uses
Schizophrenia: Treatment.
Bipolar disorder: Mania and depression.
How it's taken
Take regularly as prescribed. Don't stop without your doctor's advice.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Drowsiness
Common with some.
Weight gain
Common with some.
Restlessness or stiffness
Sometimes.
Interactions
Alcohol and sedatives
More drowsiness.
Some heart medicines
Rhythm risk.
Critical Warnings
Diabetes and weight
Black Box Warning: Can raise blood sugar, cholesterol and weight; regular checks needed.
Movement problems
Report stiffness, tremor or unusual movements.
Drowsiness
Don't drive or use machines if it makes you sleepy, and avoid alcohol.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Quetiapine: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Quetiapine: medicine to treat schizophrenia, bipolar disorder and severe depression(opens in a new tab) · NHS