Lipitor is a commonly prescribed medication used to lower cholesterol levels in the blood. However, it is important to monitor liver function while taking this medication, as there are potential risks associated with its use. According to the FDA, there have been reports of liver damage and liver failure in patients taking Lipitor [2]. The FDA has also issued a safety communication regarding important safety label changes for cholesterol-lowering statin drugs, including Lipitor, which warns of the risk of liver damage and other serious side effects [2].

In addition to liver damage, Lipitor can also cause muscle damage, which can lead to a condition called rhabdomyolysis [3]. This condition can cause muscle pain, weakness, and kidney damage, and can be life-threatening in severe cases [3]. Regular monitoring of liver function and muscle damage is therefore important for patients taking Lipitor.

According to a study published in the National Library of Medicine, liver function tests should be performed before starting Lipitor therapy, and periodically thereafter, to monitor for potential liver damage [1]. The study also suggests that patients with pre-existing liver disease or a history of alcohol abuse may be at increased risk for liver damage while taking Lipitor [1].

In conclusion, while Lipitor is an effective medication for lowering cholesterol levels, it is important to monitor liver function and muscle damage while taking this medication. Patients should be aware of the potential risks associated with Lipitor and should discuss any concerns with their healthcare provider.

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