I am 40 years old and I was on Lipitor because my cholesterol almost hit 400 (this is due to a family history of very high cholesterol) and I had major problems with muscle aches and my body felt like I was 80 years old so I stopped taking it after two weeks. My doctor changed my medication to Zoccor, however I had HUGE heart palpitations and felt like my heart was going to explode, so I stopped taking it as well. Now I am on Vytorin at the highest dose 10/40 and I feel perfect with no side effects at all. I also take CoQ10 which helps keep your muscles and your heart strong. Do a search on the internet and see the benefits of adding CoQ 10 (over the counter, no prescription needed) with your cholesterol medication. Hope this helps you as well.