Over the last month, my mother's dementia has gone from somewhat normal and steady, to an almost overnight decline. She is convinced that she is keeping children, animals are there that aren't there, and that people have been at the house that have not. Although she has been on Aricept and Namenda now for almost a year, we are concerned about what the medications are doing more than what they are not doing. I've done some research on the Namenda, and have found out that patients on this drug are more confused and do experience hallucinations. I would truly appreciate any feed back or experience anyone has had from this drug and stopping this medication. We are so confused over the almost over night decline, and are trying to make the best decisions we can. Thank you for your input.