Post-marketing Surveillance of Donepezil Hydrochloride -Investigation of the Factors That Affect Aricept Medication Persistence Rate and the Safety and Efficacy in Patients With Alzheimer's Disease in Clinical Practice

Initial dose of 3 mg orally once daily. After 1-2 weeks, dosage increased to 5 mg orally once daily. After 4 or more weeks, dosage increased to 10 mg orally once daily for patients with severe dementia of Alzheimer's type. Dose reduced appropriately according to patient's symptoms.