A Double-blind Study of E2020 (Donepezil Hydrochloride) in Patients With Dementia With Lewy Bodies (DLB) (Study E2020-J081-431)

"Observation Period: Two Donepezil hydrochloride placebo tablets once daily by mouth after breakfast for 2 weeks.~Treatment Period: One 3 mg Donepezil hydrochloride tablet by mouth plus one Donepezil hydrochloride placebo tablet by mouth, once daily for 12 weeks (Day 1- Day 84) after breakfast."

"Observation Period: Two Donepezil hydrochloride placebo tablets once daily by mouth after breakfast for 2 weeks.~Treatment Period: One 3 mg Donepezil hydrochloride tablet by mouth plus one Donepezil hydrochloride placebo tablet by mouth, once daily after breakfast for Day 1- Day 14 (2 weeks).~Followed by one 5 mg Donepezil hydrochloride tablet by mouth plus one Donepezil hydrochloride placebo tablet by mouth, once daily after breakfast for Day 15- Day 84 (10 weeks)."

"Observation Period: Two Donepezil hydrochloride placebo tablets once daily by mouth after breakfast for 2 weeks.~Treatment Period: One 3 mg Donepezil hydrochloride tablet by mouth plus one Donepezil hydrochloride placebo tablet by mouth, once daily after breakfast for Day 1- Day 14 (2 weeks).~Followed by one 5 mg Donepezil hydrochloride tablet by mouth plus one Donepezil hydrochloride placebo tablet by mouth, once daily after breakfast for Day 15- Day 42 (4 weeks).~Followed by two 5 mg Donepezil hydrochloride tablets (10 mg) by mouth, once daily after breakfast for Day 43 - Day 84 (6 weeks)."

"Observation Period: Two Donepezil hydrochloride placebo tablets once daily by mouth after breakfast for 2 weeks.~Treatment Period: Two Donepezil hydrochloride Placebo tablets by mouth, once daily for 12 weeks (Day 1- Day 84) after breakfast."