Antipsychotic Agent Selection for Coadministration with Donepezil

Introduction to Antipsychotic Selection

• The American Academy of Child and Adolescent Psychiatry notes that clozapine has the lowest EPS risk but is unsuitable as a first-line option due to serious adverse effects like agranulocytosis requiring regular blood monitoring 1

Dosing and Administration

• The American Academy of Family Physicians recommends starting with a low dose (25-50mg twice daily) of quetiapine and titrating gradually, with a target dose range of 150-300mg daily in divided doses for elderly patients with dementia-related psychosis 2

Monitoring Considerations

• The American Academy of Pediatrics suggests monitoring for QTc prolongation on ECG, as most antipsychotics can cause some degree of QT interval prolongation 3
• The American Academy of Child and Adolescent Psychiatry advises monitoring cognitive function, as both medications can affect cognition 1
• The Annals of Emergency Medicine warns against using typical antipsychotics like haloperidol, which have significantly higher EPS risk 4
• The American Academy of Pediatrics notes that the anticholinergic properties of some antipsychotics may worsen cognitive function in patients already taking donepezil 5