Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/2/2025

Quetiapine Dosage Guidelines for Special Populations

Elderly Patients

  • The American Academy of Family Physicians recommends an initial dose of 12.5 mg twice daily for elderly patients with psychiatric conditions or delirium, with a maximum dose of 200 mg twice daily 1, 2
  • Elderly patients are at risk of transient orthostatic hypotension and more sedating effects, requiring careful dose escalation and monitoring 1, 2