Pharmacological management of agitation in dementia: An evidence-based review with expert consensus

Agitation is a frequently occurring and challenging neuropsychiatric symptom of Alzheimer's disease (AD) that substantially affects quality of life, caregiver burden, and healthcare utilization. Nonpharmacological interventions, especially trigger identification, environmental adjustments, and supportive activities, remain the first-line approach for treating agitation. Pharmacological treatment should be considered only when nondrug measures are insufficient or when agitation causes severe distress or safety risks. This consensus integrates evidence up to June 2025, the Taiwan Ministry of Health and Welfare approval status, and expert opinion from Taipei Veterans General Hospital. Among the approved agents, brexpiprazole demonstrated the strongest evidence and most favorable safety profile. Risperidone and aripiprazole are effective, but require careful monitoring for cerebrovascular and extrapyramidal risks. Selected antidepressants, particularly citalopram and agomelatine, should be considered when safety is prioritized. Anticonvulsants, acetylcholinesterase inhibitors, and memantine have limited efficacy and should be reserved for refractory cases. Long-term or routine pharmacological use is not supported by current evidence. Future research should focus on identifying responsive patient subgroups, optimizing dosing strategies, and integrating medications into individualized, multidisciplinary care plans.