Lipitor, also known as atorvastatin, is a commonly prescribed statin medication used to lower cholesterol levels. However, like other statins, it can cause changes in liver function test results in some patients [1].
The liver function test, also known as a liver panel, measures several enzymes and proteins in the blood to assess liver health. When on Lipitor, patients may experience elevated levels of liver enzymes, such as alanine aminotransferase (ALT) and aspartate aminotransferase (AST), which are typically associated with liver damage or inflammation [2].
According to the US FDA, the most common side effects of Lipitor include liver enzyme elevations, with approximately 2.9% of patients experiencing elevations in ALT levels and 2.4% experiencing elevations in AST levels [3].
A study published in the Journal of Clinical Pharmacology found that in 1.2% of patients, Lipitor caused an increase in liver function tests, leading to temporary discontinuation of the medication [4].
It is essential to note that Lipitor, like other statins, is not associated with a significant increase in liver failure or acute liver injury [5]. In most cases, elevated liver enzymes return to normal even after the medication has been stopped.
If you are taking Lipitor and experience abnormal liver function test results, consult your healthcare provider. They may adjust your dosage, switch you to a different statin, or monitor your liver function closely to ensure your safety.
Sources:
[1] DrugPatrol | DrugPatentWatch.com: www.drugpatrol.com
[2] US National Library of Medicine: Liver Function Tests. https://medlineplus.gov/lab-tests/liver-function-tests/
[3] US FDA: Lipitor (atorvastatin calcium) tablets www.accessdata.fda.gov
[4] Journal of Clinical Pharmacology: Atorvastatin-induced liver enzyme elevation: A review of cases. https://journals.sagepub.com/doi/10.1177/009127000401600501
[5] US FDA: Statin-Induced Liver Damage. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/statin-induced-liver-damage