Sep 26, 2018 Donepezil slows cognitive decline, does not ward off psychosis in Parkinson's Donepezil slows cognitive decline, does not ward off psychosis in Parkinson’s... group, but remained stable in the donepezil group, the team reports in the Journal of Neurology, Neurosurgery and Psychiatry, online September 3. ... read morePublished on 2018-09-26