Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [3]. According to Drug Patent Watch, Lipitor is a widely prescribed medication that has been used for decades to reduce cholesterol levels in patients [1]. However, some individuals may not respond to the medication as expected, leading to the term "statin-resistant" [2].

There are several reasons why Lipitor may not work for some individuals. One reason is that they may not be taking the medication as prescribed by their doctor [2]. It is essential to follow the prescribed dosage and take the medication at the same time every day to achieve the desired results. Another reason why Lipitor may not work is that the patient may have a genetic condition that affects how their body processes the medication [2]. In some cases, patients may also experience side effects from the medication, which can lead to discontinuation of the drug [3].

It is important to note that Lipitor is not effective for everyone, and some patients may require alternative medications or treatments to manage their cholesterol levels [2]. If you are experiencing side effects or not seeing the desired results from Lipitor, it is essential to speak with your doctor about alternative options.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.webmd.com/cholesterol-management/cholesterol-tests-statin-resistant
[3] https://medlineplus.gov/druginfo/meds/a600045.html