Lipitor is a brand name for atorvastatin, which is a medication that belongs to the class of drugs known as statins. Statins are commonly prescribed to lower cholesterol levels in the blood and reduce the risk of heart disease. However, like all medications, Lipitor can cause side effects, including liver problems.

According to the Mayo Clinic [3], statins, including Lipitor, can cause liver damage. This is because statins can increase the levels of liver enzymes, which are markers of liver inflammation and damage. In rare cases, statins can cause severe liver damage, which can lead to liver failure and even death. Therefore, people taking Lipitor should have their liver function monitored regularly by their doctor.

Medical News Today [2] also notes that Lipitor can cause a range of liver problems, including elevated liver enzymes, hepatitis, and jaundice. These side effects are more likely to occur in people who have a history of liver disease or who drink alcohol excessively. Therefore, people with liver disease or a history of liver problems should not take Lipitor without consulting their doctor first.

Finally, Drug Patent Watch [1] notes that Lipitor has been associated with cases of liver failure and death, although these cases are rare. The site also notes that the risk of liver problems is higher in people who take high doses of Lipitor or who take the medication for a long time.

In conclusion, Lipitor can impact liver function and cause liver problems, including elevated liver enzymes, hepatitis, and jaundice. People taking Lipitor should have their liver function monitored regularly by their doctor, and people with liver disease or a history of liver problems should not take Lipitor without consulting their doctor first. However, it's important to note that the risk of liver problems is relatively low and that Lipitor is generally considered safe and effective for lowering cholesterol levels and reducing the risk of heart disease.

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