Lipitor is a medication used to lower cholesterol levels in the blood. It is a statin drug that works by blocking an enzyme in the liver that produces cholesterol [3]. According to Drug Patent Watch [1], the active ingredient in Lipitor is atorvastatin calcium, which is a member of the drug class known as HMG-CoA reductase inhibitors. It is indicated to reduce the risk of heart attack, stroke, and certain types of heart surgeries in patients with heart disease or several risk factors for heart disease.

While Lipitor is primarily used to lower cholesterol levels, there is some evidence to suggest that it may also improve liver function in certain cases. According to the National Center for Biotechnology Information [2], statins like Lipitor have been shown to improve liver function in patients with non-alcoholic fatty liver disease (NAFLD), a condition in which fat builds up in the liver. In a study of patients with NAFLD, treatment with atorvastatin was associated with significant improvements in liver function tests, as well as reductions in liver fat content and inflammation [2].

However, it is important to note that while Lipitor may improve liver function in some cases, it can also cause liver damage in rare cases. According to the Mayo Clinic [3], statins like Lipitor can cause liver damage in less than 1% of patients. Symptoms of liver damage may include fatigue, loss of appetite, dark urine, and yellowing of the skin or eyes. Patients taking Lipitor should be monitored for signs of liver damage, and liver function tests may be performed periodically to ensure that the medication is not causing any harm [3].

In conclusion, while Lipitor is primarily used to lower cholesterol levels, it may also improve liver function in certain cases, particularly in patients with non-alcoholic fatty liver disease. However, patients taking Lipitor should be monitored for signs of liver damage, as the medication can cause liver damage in rare cases.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK548236/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013