Lipitor, also known as atorvastatin, is a medication that is commonly prescribed to lower cholesterol levels in the body. According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, making it available as a generic drug. While Lipitor is generally considered safe and effective, there are potential side effects to be aware of.

One potential side effect of Lipitor is muscle damage, also known as myopathy. According to Mayo Clinic [2], myopathy can cause muscle pain, weakness, and damage to muscle tissue. In rare cases, myopathy can progress to a more serious condition called rhabdomyolysis, which can cause kidney damage or failure.

The risk of muscle damage from Lipitor appears to be low, but certain factors can increase the risk. These factors include older age, female gender, kidney or liver disease, and certain medications. Additionally, higher doses of Lipitor may increase the risk of muscle damage.

A study published in the National Library of Medicine [3] found that while muscle damage from Lipitor is rare, it can occur in some patients. The study suggests that regular monitoring of patients taking Lipitor can help identify muscle damage early on and prevent more serious complications.

In conclusion, Lipitor is a commonly prescribed medication for lowering cholesterol levels in the body. While it is generally safe and effective, there is a potential risk of muscle damage, particularly in patients with certain risk factors. Regular monitoring of patients taking Lipitor can help identify muscle damage early on and prevent more serious complications.

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://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949584/