When I was diagnosed with type II last December, the doctor put me on Actos and Lipitor. I worked to change my diet, and started an exercise program.
After about a month, I started to have pain in my upper back muscles. Initially, I didn't think it was a matter for concern, since I didn't have dark urine, fever, swelling or other signs of muscle breakdown. But after another month, as the same amount of exercise got harder and harder to do, and the pain worsened, I decided to discontinue the Lipitor and see what happened.
In less than a week, the pain was better, though even now about 5 weeks later, my upper back still hurts if I've been standing or walking for several hours (late in the day on a work day, for example). But the muscles are not so clenched tight as they were, and if I sit back for awhile, they relax. Then I can go on with my late day exercise, etc.
Also, in just a few days after stopping Lipitor, my exercise intolerance improved very noticeably. That leads me to believe that I made the right choice. I've been able to go on gradually increasing the intensity and duration of exercise, and am now up to 40 minutes at my training heart rate.
I guess I'll find out tomorrow whether my doctor agrees. The way I see it, though, is that for me the choice was between continuing exercise or continuing Lipitor. Since December, I've lost 25 lbs and my fasting blood glucose levels have fallen from 210-220 down to 100-120. The diet, exercise, and weight loss should also improve my cholesterol. I'm not willing to risk the statin side effects anymore.