A 24-weeks, Multi-center, Randomized, Double-blind, Placebo Controlled Study to Evaluate the Efficacy and Safety of Donepezil Hydrochloride in Chinese Subjects With Severe Alzheimer's Disease
The objective is to demonstrate that donepezil hydrochloride 10 mg/day has superior efficacy compared with placebo in cognitive function in Chinese subjects with severe Alzheimer's Disease.