Hello everyone, I am a little slow in responding to the list but better late than never. There is a brand new drug on the market for Alzhiemers called Aricept. It is an acetylcholinesterase inhibitor. Which means it will raise the level of acetylcholine in the brain. It seems to enhance the memory to a small degree in studies done so far. I have some reservations on whether or not it will work in PD cases, but a leading PD specialist in Detroit ( DR. Peter LeWitt) has prescibed it in one case that I know of right now. I will wait to see how that turns out, and let you know. Some of the side effects listed are : muscle weakness muscle cramps fasiculations diarrhea nausea vomiting headache dizziness Hope this helps. John Reppert Rph. (pd 3yrs/37yo)