Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (Aricept) In The Treatment Of The Cognitive Dysfunction Exhibited By Children With Down Syndrome, Aged 6 To 10

"All subjects will start with a dose of 1.25 mg/day (1.25 ml) donepezil ; dose escalations will occur every 2 weeks to a maximum of 5 mg/day (5 ml) donepezil.~All doses will be administered orally."

"All subjects will start with a dose of 1.25 mg/day (1.25 ml) placebo; dose escalations will occur every 2 weeks to a maximum of 5 mg/day (5 ml) placebo.~All doses will be administered orally."