Lipitor is a medication used to lower cholesterol levels in the blood. It contains the active ingredient atorvastatin calcium, which works by blocking an enzyme that produces cholesterol in the liver. According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, which means that generic versions of the medication are available. However, it is important to note that generic medications are not always available over the counter.

In 2015, Pfizer, the company that manufactures Lipitor, decided to withdraw its application to sell an over-the-counter (OTC) version of the drug due to concerns that patients would not use it appropriately without the guidance of a healthcare professional [2]. This means that at the moment, Lipitor is not available over the counter.

If you need to take Lipitor, you will need a prescription from a healthcare provider. It is important to take the medication as directed and to follow up with your healthcare provider regularly to monitor your cholesterol levels and adjust your treatment plan as needed [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.forbes.com/sites/johnlamattina/2015/07/29/pfizer-pulls-the-plug-on-otc-lipitor-and-its-the-patients-fault/
[3] https://www.everydayhealth.com/drugs/lipitor