Melynda, it doesn't appear that you're getting a direct reply to your post,
"Exelon for PD dementia",
but yesterday I went to the doctor and took an article about Exelon with me, and he said that he would rather prescribe Razadyne because he has had fewer complaints about Nausea and Vomiting.
He did not elaborate
He gave me a Razadyne sample to try for 8 weeks, and I didn't press for more info, because I was in in between his regular appointments.

It also appears that there are different kinds of hallucinations . . my wife, Elinor is seeing things that are not there or happening, like there are critters in the house or our giant popular tree is moving up and down to let our neighbors cat pass under. As you can see BEMM talked about seeing "green and pink lace patterns on all white surfaces"
(We have tried adjusting Elinor's PD medications, but that hasn't helped at all)

Regards . . Tom