How much did it cost? My MIL is starting to lose it.
http://www.swansonvitamins.com/SWU493/ItemDetail?csi=SN393&csp=SWU493
Another thing I stumbled on a few years ago was a somewhat obscure form of Vitamin E known as tocotrienols.
My mom was in a nursing home. She'd been diagnosed (rubber-stamped) with Alzheimer's, but in retrospect she did not display typical AD behavior other than forgetfulness so I think it must have been vascular dementia, though her Parkinson's was a factor also.
I'd been sneaking her CoQ10, as it's been shown to arrest the progression of PD. Then Swanson had a "deal" on CoQ10 blended with tocotrienols. I thought, "Ok whatever. A little vitamin E won't hurt." Gave her two at night before bedtime:
http://www.swansonvitamins.com/SWU349/ItemDetail#reviews
The following day, WOW, what a difference! It was like it had dialed the clock back five or six years. I had my mom back again!
Unfortunately I couldn't get there every day to give it to her but on the days I did the results were overnight and fantastic.
Probably won't work for everyone but it's worth a try.