I have experienced severe memory loss from 10 years of Lipitor therapy. When I stopped the Lipitor I regain most of my memory but still have periods of searching for words. I also have pretty severe muscle weakness in my lower extremities. I read a few months ago that acetyl-L-carnitine would help so I have been taking 1000 mg morning and night and have regained pretty much all my memory and feel better...also have less muscle weakness. Do you know of any side effects of this that I should be aware of? I am on blood pressure medicine, antidepressant and generic Klonopin.