My mother is 96 years old and has lived with Alzheimer's disease for seven years. Her illness has now entered the Advanced stage. Throughout her journey she has taken Namenda and Aricept which are supposed to provide symptomatic relief albeit temporarily. How do I know whether these drugs continue to provide any benefit and whether she should continue to take them? The drugs may be doing little or nothing for her at this point. But, on the other hand, I fear that she could decline more rapidly if the drugs are removed. Does anyone have thoughts on this matter or experience with patients who came off these drugs after long term use?