Quetiapine
Generic Name: Quetiapine
Uses & Medical Indications
Schizophrenia, bipolar disorder, adjunct for major depressive disorder
Schizophrenia, Bipolar Mania, Bipolar Depression
Work Mechanism & Pharmacology
Patient Overview of Work Mechanism
Quetiapine works at the cellular level to correct underlying biochemical imbalances, reduce clinical symptoms, and support overall health.
Clinical Mechanism of Action (MoA)
Quetiapine exerts targeted therapeutic activity by interacting with specific cellular receptors, enzymatic pathways, or biological signaling cascades to relieve symptoms and restore physiological balance.
Dosage & Administration Guidelines
50 mg daily, titrated to 300-800 mg/day based on indication
25 mg twice daily for schizophrenia (13-17 yrs)
Start at 25 mg/day, titrate slowly
800 mg/day
No adjustment necessary
Start at 25 mg/day in hepatic impairment, titrate slowly
Side Effects & Safety Warnings
Somnolence, dry mouth, dizziness, constipation, weight gain
Tardive dyskinesia, NMS, metabolic syndrome, suicidal thoughts, QT prolongation
Hypersensitivity to quetiapine
Increased mortality in elderly patients with dementia-related psychosis
Interactions (Drugs, Food & Alcohol)
CYP3A4 inhibitors/inducers, CNS depressants, QTc prolonging drugs
Take XR without food or with a light meal
Increases CNS depression
Pregnancy & Breastfeeding Safety
Risk of extrapyramidal/withdrawal symptoms in neonates
Use caution; present in human milk
Patient Counseling & Practical Advice
Take XR without food. Rise slowly to prevent dizziness. Report abnormal movements.
Take as soon as remembered. Skip if near next dose.
Lipids, fasting glucose, weight, eye exam (cataracts)
Related Medicines in Atypical Antipsychotics
When to Seek Urgent Medical Attention
Seek immediate emergency medical care (call emergency services or proceed to the nearest emergency department) if you experience signs of a life-threatening allergic reaction (anaphylaxis: facial, lip, tongue, or throat swelling causing airway obstruction), severe cutaneous blistering with skin peeling, sudden intense chest pain, or symptoms of overdose.
Content for Quetiapine was synthesized from standardized public health monographs, official pharmacopoeias, and health authorities:
- Central Drugs Standard Control Organization (CDSCO) — National List of Essential Medicines
- World Health Organization (WHO) — Model List of Essential Medicines
- Indian Pharmacopoeia Commission (IPC) — Indian Pharmacopoeia Drug Monographs
- National Health Service (NHS) — Medicines A to Z Clinical Guidelines
The information provided on this website is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.