Lipitor is a medication used to lower cholesterol levels in the body. According to Drug Patent Watch [1], it is the brand name for the drug atorvastatin, which is classified as a statin medication. Statins are known to be metabolized by the liver, and as such, there have been concerns about their safety in individuals with pre-existing liver conditions.

However, a study published in the National Center for Biotechnology Information [2] found that statins, including atorvastatin, are generally safe for patients with liver disease. The study concluded that statins can even improve liver function in some cases.

That being said, it is important to note that patients with liver disease should still exercise caution when taking any medication, including Lipitor. The American College of Gastroenterology [3] recommends that patients with liver disease undergo regular liver function tests to monitor any potential adverse effects of medication.

In summary, while Lipitor (atorvastatin) is generally considered safe for patients with liver disease, it is important for individuals with pre-existing liver conditions to closely monitor their liver function and consult with their healthcare provider before taking any medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5822686/
[3] https://gi.org/topics/medications-and-the-liver/