Atorvastatin, sold under the brand name Lipitor, is a widely used medication to lower cholesterol levels and reduce the risk of heart disease [2]. The patent for Lipitor expired in 2011, and since then, several generic versions of atorvastatin have been available in the market [1].

According to the FDA, generic drugs are required to have the same active ingredient, strength, dosage form, and route of administration as the brand-name drug [3]. Therefore, generic versions of atorvastatin should have the same efficacy and safety profile as Lipitor.

A study published in the National Library of Medicine found that generic atorvastatin was as effective as Lipitor in reducing cholesterol levels and preventing cardiovascular events [2]. The study also concluded that the incidence of side effects was similar between the two groups, with no significant differences in adverse events reported.

GoodRx, a website that provides information on prescription drugs, lists the common side effects of atorvastatin as muscle and joint pain, diarrhea, constipation, and nausea [3]. However, it is important to note that individual responses to medication may vary, and some people may experience different or more severe side effects.

In summary, generic versions of atorvastatin should have the same efficacy and safety profile as Lipitor, including similar side effects. It is always recommended to consult with a healthcare provider before starting any medication and to report any adverse effects experienced during treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4859299/
[3] https://www.goodrx.com/atorvastatin/what-is