The psych doc said memantine was the only drug applicable at Mom's stage (severe alzh). We tried it last Christmas but Mom had a really bad reaction to it, so the doc stopped it. I am now being pestered by a psych nurse (doc on maternity leave) who is pressurising me to try Mom on donezepil (Aricept), though he says it is borderline whether it would help, as it is for early stages of Alzh. I am scared of causing Mom to experience another bad reaction to a drug and/or disturb her current state but he is making me feel like a bad person for not trying it. Has anyone had experience of this drug in the later stages of Alzh?