When should Namenda and aricept be discontinued? My mother is no longer able to potty herself, walk, clothe herself, brush her teeth, and we are beginning to feed her. She does recognize us. She does not have true alzheimers, but a dementia of some sort. Has been on these treatments for about 6-7 years or more. She is still eating and has not lost weight at this point. Sleeps 14 hrs a day or so, no longer carries on conversations but will answer questions with short replies.