The reason I am asking is, 10 weeks ago my aunt ws put on aricept and within 14 days my aunt became very deusional, prior to this she was confused but not obsessional. She was admitted for assessment and the drugs were stopped for a couple of weeks and she seemed to "get better" apart from crying a lot. Now she has been put on another dementia drug in the last 14 days she has again become very delusional. Can certain people be very senstive to these drugs, I feel at the moment she would be better off the dementia drugs and just on an antidepressant and diazepan to help with her anxiety. Any help appreciated. thanks annie