What are the contraindications of quetiapine?

Question

Dr. Jun-Ting Yeung · Accepted Answer

- **Only one absolute contraindication:** known hypersensitivity to quetiapine or any formulation excipients (anaphylaxis has been reported) - **Elderly with dementia-related psychosis:** not approved for this use; associated with ~1.6–1.7x increased risk of death vs placebo (FDA boxed warning) - **QTc prolongation:** avoid in congenital long QT syndrome, bradycardia, hypokalemia, hypomagnesaemia, and with concurrent QTc-prolonging drugs - **Pregnancy:** limited human safety data; neonatal withdrawal symptoms reported; use only if benefit clearly outweighs risk - **Breastfeeding:** not recommended ## Absolute Contraindication - **Hypersensitivity** to quetiapine or any excipient in the formulation; anaphylactic reactions have been reported ## Major Warnings (Relative/Clinical Contraindications) ### Elderly Patients with Dementia-Related Psychosis - **Avoid** — antipsychotics increase mortality approximately 1.6–1.7x compared to placebo in this population…

Clinical Situation	Concern
Diabetes mellitus	Risk of hyperglycaemia and hyperosmolar coma; monitor glucose
Primary insomnia (off-label)	Scant evidence
Seizure history / Alzheimer's dementia	Lowers seizure threshold (0.5% incidence in trials)
Hepatic impairment	Reduced clearance; lower starting doses required
Urinary retention / prostatic hypertrophy	Anticholinergic effects may worsen voiding
Narrow-angle glaucoma	Increased intraocular pressure risk
Aspiration risk / dysphagia	Oesophageal dysmotility reported; risk of aspiration pneumonia
Pregnancy	Limited safety data; neonatal withdrawal symptoms reported
Breastfeeding	Not recommended
Metabolic syndrome / obesity	Causes weight gain, dyslipidaemia, and hyperglycaemia even at low doses
CNS depressants / alcohol	Additive sedation and hypotension

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What are the contraindications of quetiapine?

Key Points

Absolute Contraindication

How is every Heidi Answer reviewed?

Major Warnings (Relative/Clinical Contraindications)

Elderly Patients with Dementia-Related Psychosis

QTc Prolongation / Cardiac Risk

Drug–Drug Interaction–Related “Functional Contraindications"

Suicidality

Situations Requiring Significant Caution