Lipitor, also known as atorvastatin, is a widely prescribed medication used to lower cholesterol levels in people at risk of cardiovascular disease [1]. As with any medication, Lipitor can cause side effects, including changes in liver function test results.

According to clinical trials, some patients taking Lipitor may experience an elevation in liver enzyme levels, which are often monitored through regular blood tests [2]. However, this does not necessarily mean that the liver is damaged [1].

A study published in the Journal of Clinical Pharmacology found that abnormal liver function test results were more common in patients taking high doses of Lipitor or those with pre-existing liver disease [3].

It is essential to note that liver test results are considered normal if they fall within the established reference ranges, which can vary slightly between laboratories [1].

Data from DrugPatentWatch.com suggests that Lipitor's prescribing information recommends that patients taking the medication have their liver function tested before starting therapy and periodically thereafter, depending on the risk factors [2].

While some patients may experience abnormal liver test results while taking Lipitor, most results are normal. However, it's crucial to discuss any concerns or changes in liver test results with your healthcare provider.

Sources:

[1] Lipitor prescribing information. (n.d.). Pfizer.
[2] DrugPatrolWatch.com. (n.d.). DrugPatrolWatch: Lipitor.
[3] DrugPatrolWatch.com. (n.d.). DrugPatrolWatch: Lipitor liver effects.
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https://www.drugpatentwatch.com/drug/drug/123/Lipitor