Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels and prevent heart disease [1]. It is essential to follow the liver monitoring schedule while taking Lipitor because there are risks associated with not doing so.

According to the National Center for Biotechnology Information, atorvastatin can cause liver damage, and it is necessary to monitor liver function during treatment [2]. The FDA also issued a drug safety communication in 2012, stating that the use of statins, including atorvastatin, could cause liver damage, leading to liver failure, and that liver function tests should be performed before and during treatment [3].

If the liver function is not monitored regularly while taking Lipitor, liver damage can go undetected, leading to severe liver problems, including liver failure. Liver damage symptoms may include dark urine, yellowing of the skin or eyes, fatigue, nausea, and abdominal pain. If any of these symptoms occur, medical attention should be sought immediately [2].

In conclusion, not following the liver monitoring schedule while taking Lipitor can lead to liver damage, including liver failure. It is crucial to have regular liver function tests while taking Lipitor to detect any potential liver damage early and avoid severe liver problems [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK430779/
[3] https://www.fda.gov/drugs/drug-safety-and-availability/fda-drug-safety-communication-important-safety-label-changes-cholesterol-lowering-statin-drugs.