Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels and reduce the risk of heart disease and stroke. According to the sources provided, Lipitor can affect liver function in some patients.

Medical News Today [1] reports that Lipitor can cause liver damage in rare cases. The article explains that the drug can cause elevated levels of liver enzymes, which can indicate liver damage. Patients taking Lipitor should have their liver function monitored regularly by a healthcare provider.

Mayo Clinic [2] also notes that statins, including Lipitor, can cause liver damage in some patients. The article explains that liver damage is rare, but can be serious. Patients taking statins should report any symptoms of liver problems, such as abdominal pain, dark urine, or yellowing of the skin or eyes, to their healthcare provider.

Drug Patent Watch [3] provides information on the FDA-approved label for Lipitor, which includes a warning about liver damage. The label notes that Lipitor can cause elevated liver enzymes and liver damage in rare cases. The label recommends regular monitoring of liver function in patients taking the drug.

In conclusion, while liver damage from Lipitor is rare, it is a potential side effect of the drug. Patients taking Lipitor should have their liver function monitored regularly by a healthcare provider and report any symptoms of liver problems.

Sources:
[1] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.drugpatentwatch.com/p/tradename/LIPITOR