Lipitor is a medication that is commonly used to lower cholesterol levels and reduce the risk of heart disease [1]. However, there is a possibility that it can worsen existing liver problems. According to the Mayo Clinic, some people who take statins, including Lipitor, may experience liver problems, such as an increase in liver enzymes [2]. This is more likely to occur in people who already have liver disease or who consume alcohol excessively. In rare cases, Lipitor can cause liver damage or even liver failure, although this is very uncommon [2].

Medical News Today also states that Lipitor can cause liver problems, but notes that this is rare and usually only occurs in people who are taking high doses of the medication or who have pre-existing liver disease [3]. The article advises people who are taking Lipitor to have their liver function monitored regularly, especially if they have a history of liver problems.

In summary, Lipitor has the potential to worsen existing liver problems, although this is rare. People who have liver disease or who consume alcohol excessively may be at a higher risk of experiencing liver problems while taking Lipitor. It is important for people who are taking Lipitor to have their liver function monitored regularly, especially if they have a history of liver problems [2][3].

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.medicalnewstoday.com/articles/drugs-lipitor-side-effects