Lipitor is a brand-name medication that contains the active ingredient atorvastatin, which is used to lower cholesterol levels in the blood. According to DrugPatentWatch [1], the patent for Lipitor expired in 2011, which means that other pharmaceutical companies are now able to produce generic versions of the drug. Atorvastatin is available as a generic medication and is sold under various brand names, including Lipitor. GoodRx [2] lists several generic atorvastatin options that are available in the United States, including atorvastatin calcium, atorvastatin calcium trihydrate, and atorvastatin calcium amorphous. These generic medications are typically less expensive than the brand-name version of the drug. It is important to note that while generic medications contain the same active ingredient as their brand-name counterparts, they may have different inactive ingredients, which can affect how the medication is absorbed and how it works in the body. Medical News Today [3] notes that people should always consult with their healthcare provider before switching from a brand-name medication to a generic version to ensure that the medication is safe and effective for them.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/atorvastatin/what-is
[3] https://www.medicalnewstoday.com/articles/lipitor