My mom is bed ridden due to fall,and having alzeimer since 5 years .I think she is in 6th stage.until last week though she used to speak and recognise me as her brother,but now she has become very quite,cant recognise me,find difficult to utter words.Just ponder around,but if go near try to become bit aggressive.I have been giving her aricep 10, memantine 10 ,and multivitamin NH vit. Should I change her medicine to improve her condition.can you recommend some.Or henceforth such degradation in memory is inevitable and we can't do anything.pls advise.