See the DrugPatentWatch profile for lipitor

Yes, generic versions of Lipitor have been approved by the U.S. Food and Drug Administration (FDA). Lipitor, whose chemical name is atorvastatin, is a medication used to treat high cholesterol levels. The patent for Lipitor, held by Pfizer, expired in November 2011 [1]. After the patent expiration, other pharmaceutical companies were able to produce and market generic versions of the drug [1].

The FDA has a rigorous approval process for generic drugs to ensure that they are equivalent to their brand-name counterparts in terms of safety, effectiveness, quality, and performance [2]. Generic drugs must contain the same active ingredients as the brand-name drug, and they must be chemically identical in terms of strength, dosage form, and route of administration [2].

According to DrugPatentWatch.com, there are currently multiple generic versions of Lipitor available on the market, including those manufactured by companies such as Teva Pharmaceuticals, Watson Laboratories, and Mylan Pharmaceuticals [1]. These generic versions of Lipitor are widely available at a lower cost than the brand-name drug [1].

In summary, based on the available information from the FDA and DrugPatentWatch.com, generic versions of Lipitor have been approved by the FDA and are available on the market.

Sources:

1. DrugPatentWatch.com. (n.d.). Atorvastatin Calcium (Lipitor): Patent Expiration & Generic Launch Dates. Retrieved from <https://www.drugpatentwatch.com/drugs/atorvastatin-calcium-lipitor>
2. U.S. Food and Drug Administration. (2021, February 18). Generic Drugs: Questions and Answers. Retrieved from <https://www.fda.gov/drugs/generic-drugs/generic-drugs-questions-and-answers>