Lipitor is a brand name for the drug atorvastatin, which is a type of statin medication used to lower cholesterol levels in the blood [1]. While Lipitor is generally considered safe and effective, it may cause some side effects, including muscle pain, weakness, and damage [2]. According to a study published in the Journal of Clinical Lipidology, muscle-related side effects of statins like Lipitor occur in about 10% of patients [3].

Muscle pain and weakness are the most common side effects of Lipitor and other statins. These symptoms may be mild or severe and can affect any muscle in the body, including the legs, arms, and back. In rare cases, statins like Lipitor can cause a serious condition called rhabdomyolysis, which is the breakdown of muscle tissue that can lead to kidney damage or failure [2].

If you experience any muscle-related side effects while taking Lipitor, it is important to speak with your doctor. They may recommend reducing your dose or switching to a different medication. In some cases, your doctor may also order blood tests to check for signs of muscle damage [2].

In conclusion, while Lipitor is generally safe and effective, it may cause muscle-related side effects in some patients. If you experience any muscle pain, weakness, or other symptoms while taking Lipitor, it is important to speak with your doctor right away [1][2][3].

Sources:
[1] DrugPatentWatch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Mayo Clinic. Statin side effects: Weigh the benefits and risks. Retrieved from https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] Thompson PD, Panza G, Zaleski A, Taylor B. Statin-associated side effects. Journal of Clinical Lipidology. 2010;4(5):376-383. doi:10.1016/j.jacl.2010.08.007.