See the DrugPatentWatch profile for lipitor

Studies have been conducted to compare the efficacy of generic versions of Lipitor (atorvastatin). One study published on PubMed Central found that generic atorvastatin was bioequivalent to the brand-name Lipitor, showing similar efficacy in lowering cholesterol levels. Another study mentioned on Drug Patent Watch also indicates that generic atorvastatin is comparable in effectiveness to the brand-name version. These studies provide valuable insights into the interchangeability and efficacy of generic atorvastatin compared to the original Lipitor formulation.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4859299/
[3] https://pubmed.ncbi.nlm.nih.gov/27098970/