I took Lipitor 20 mg for 2 weeks. After day 5, I felt like I was getting the flu. By day 7 I could hardly get off the floor. No amount of stretching would relieve the aches and pain. Weak arms, legs and my whole body ached. I operate heavy equipment and could barely climb up on it. Could no longer work out on weights or walk any distance at all. Doc says RA or Fibromyalgia or bad shoulders or it's all in my head. I'm just glad he gave me lots Hydrocodone. Still depleted, looking for energy, trying to find what I lost to Lipitor.