Hi, I have not posted for awhile. I was wondering if you could give me some information on Aricept. I have been told that this is a benefit to people with Dementia. I spoke to my husband's doctor about it yesterday and the doc said that he didn't know if this would be any good for the type of dementia my husband has (Vascular). He said that he needed to have a blood test to see if Aricept would be any good for him. Can anyone shed some light on why the blood test is necessary. Thank you.