Dealing with a dr.-confirmed sinus infection, I attributed the dizziness, reduced mental acuity, iffy physical dexterity, and a tremor in my hand when I brought food to my mouth to the medications I was taking for the infection. Yesterday, I developed a severe muscle cramp in my calf, and when I mentioned it to a friend, she pointed out that it might be the Lipitor. I came to this site for information, discovering many similar stories. So I decided to add my input. I took myself off it today and am looking into Cholesten LDL.