This is written on behalf of my sister, she has taken Lipitor for...

This is written on behalf of my sister, she has taken Lipitor for a few years and now she experiences back pain, severe loss of memory. At times she can not even remember her children's names. We thought that age was a factor but she was tested for Alzheimer and her Doctor said that she was did not have that disease. She urinates frequently at night and does not sleep well at all. She is depressed most of the time. She stays frustrated because she is aware that something is happening to her and no one seems to be able to help her or tell her what is wrong. The only other med that she takes is for high blood pressure and her doctor just recently changed her from Procardia which has a lot of negative side effects also. Back pain, frequently urinating at night, sleepiness' and memory loss started after she started to take Lipitor and we are trying to find an alternative for her to take for her cholesterol.