Which type of agent such as donepezil (Aricept)has been FDA approved for the treatment of dementia?

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Indirect acting,reversible acetylcholinesterase inhibitors are being used to treat Alzheimer Disease (AD)dementia.They have been shown to produce modest improvements in dementia symptoms but they do not slow down,stop,or reverse disease progression.At one time anticholinergic agents were commonly used to reduce tremors associated with Parkinson disease,but at present they are only used occasionally.Some adrenergic agonists have been used to treat attention-deficit disorder (ADD)and narcolepsy.

Which Type of Agent Such as Donepezil (Aricept)has Been FDA