21
Participants
Start Date
December 31, 2011
Primary Completion Date
April 30, 2012
Study Completion Date
July 31, 2012
Donepezil
Use 1 capsule (5 mg) of donepezil once per day for first 21 days than donepezil 10mg qday for 21 days.
Placebo
Use 1 capsule (5 mg) once per day for first 21 days than 10mg qday for 21 days.
Parkinson's Center of Oregon - Oregon Health and Science University, Portland
Oregon Health and Science University
OTHER