My elderly mother has been taking Donepezil for almost 4 years now. She is 92 now.
When she first starting taking this medication her memory was getting spotty and her doctor (a general practitioner), put her on Donepizil. Her memory wasn't improving so he doubled the dose. Not only wasn't her memory improving, it seemed to be getting worse! She seemed more confused, withdrawn, and eve depressed. One day she didn't take and seemed much more "with it". Can this drug have adverse effects?