Open-Label, Multicentre, One Year Extension of the Evaluation of the Safety of Donepezil Hcl in Patients With Dementia Associated With Cerebrovascular Disease

A one year extension study for patients who completed E2020-A001-319. Patients will receive 5my donepezil daily for the first 8 weeks and will be assessed by the incidence of advere events, changes in physical exams, ECG and clinical lab determinations. The results will be assessed 6 timues during the year. After 8 week, the investigator may increase the dose to 10mg/day if the patient if the patients show satisfactory tolerability. Six psychometric scales will also be evaluatd.