Quetiapine: uses, side effects & brands

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed 5 November 2026

Quetiapine treats schizophrenia and bipolar disorder and is sometimes used for sleep at low doses. It belongs to the Antipsychotic / mood stabiliser group. These treat serious mental-health conditions such as psychosis, bipolar disorder and severe agitation.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	Antipsychotic / mood stabiliser
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Schizophrenia
Bipolar disorder (mania and depression)
Add-on treatment for depression (some forms)

Common brand names

India: Qutan, Seroquin, Q-Pin
Worldwide: Seroquel

Common side effects

Drowsiness
Dizziness on standing
Dry mouth and constipation
Weight gain and raised blood sugar or cholesterol

Before taking it — precautions

Tell your doctor about heart rhythm problems, diabetes, liver disease, seizures or low blood pressure
Not recommended just as a sleeping aid without a doctor's review; avoid alcohol
In elderly people with dementia it increases the risk of stroke and death

When to see a doctor urgently

High fever with stiff muscles and confusion (urgent)
Fainting or a fast, irregular heartbeat (urgent)
New or worsening thoughts of self-harm, especially in young people

Not a prescription — no dose shown. The right dose of quetiapine depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.

Frequently asked questions

Is quetiapine a sleeping tablet?

No. It is an antipsychotic; sleepiness is a side effect. Using it only for sleep is generally discouraged because of its other risks.

Why do I feel dizzy when I stand up?

Quetiapine can lower blood pressure on standing. Get up slowly, especially early in treatment.

Can I stop quetiapine suddenly?

No. Stopping suddenly can cause sleep problems, nausea and return of symptoms. Your doctor will reduce it slowly.

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Sources & further reading

Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.