I took Lipitor for several months and frequent urination and lower back weakness and some pain started. I do not take any other drugs. I stopped medication and after about a week or ten days, the symptoms went away. The Dr. has told me to start taking the medication again because my cholestrol has gone back up, but I am worried that the drug may be affecting my kidneys. They do not seem to think so. My urine is not discolored and I have no protien in my specimen, but I know that my body and something is going on. I had these same symptons earlier when I was taking Nician with Lipitor, but when I discontinued the Nician the symptoms went away. After four or five months, the symptoms returned although I was no longer taking the Nician.