My husband has been taking Donepezil for 3 years, 5mg increasing to 10mg per day. They suited him very well. However he has started to decline in the last few weeks with his short term and long term memory now at nil and increasing confusion. We saw the Consultant last week who decided to change medication to Rivastigmene as OH had begun having more frequent bowel movements each day and occasionally not making it to the loo in time, and he felt it could be a side effect. My question is whether anyone on TP has experience with Rivastigmene as it appears Donepezil seems to be the more common one of the drugs used and I wondered if there is much difference between them.