Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels in the body. According to Drug Patent Watch [1], muscle pain is a common side effect of atorvastatin. However, the Mayo Clinic [2] notes that muscle pain is not a common side effect of statins, but it can occur in some people. In addition, the Cleveland Clinic [3] suggests that muscle pain is a potential side effect of statins and recommends discussing any muscle pain with a healthcare provider to determine the best course of action.

In summary, while muscle pain is listed as a common side effect of atorvastatin [1], it is not necessarily a common side effect of statins in general [2][3]. It is important to discuss any muscle pain with a healthcare provider to determine the cause and appropriate treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://health.clevelandclinic.org/statins-giving-you-achy-muscles-ask-your-doctor-about-these-4-potential-fixes/