Cardiovascular Effects of Donepezil in Patients with Dementia Free Abstract Article (References) Article (PDF 69 KB) Heart rate variability is used to assess cardiovascular autonomic function. The cholinesterase inhibitor donepezil potentially affects parasympathetic activity. Twenty participants with Alzheimer's disease or dementia with Lewy bodies were treated with donepezil in a pilot study. Power spectral analysis was used to analyse 5 min of beat-to-beat RR interval data in 15 cases.