Lipitor (atorvastatin) and Crestor (rosuvastatin) are both prescription drugs used to lower cholesterol levels. According to the drug patent watch website [1], the patent for Lipitor expired in 2011, which means that generic versions of the drug are available. On the other hand, the patent for Crestor expired in 2016 [1].

A study published in the Journal of the American Medical Association in 2005 [2] found that both Lipitor and Crestor were effective in reducing LDL cholesterol levels. However, Crestor was found to be more effective in reducing LDL cholesterol levels compared to Lipitor. The study also found that Crestor was generally well-tolerated by patients.

When it comes to the cost of these drugs, it can vary depending on factors such as insurance coverage and the pharmacy. According to SingleCare [3], the average retail price for a 30-day supply of Lipitor is $10.80 for the generic version and $458.80 for the brand-name version. The average retail price for a 30-day supply of Crestor is $10.80 for the generic version and $366.80 for the brand-name version.

In conclusion, both Lipitor and Crestor are effective in reducing cholesterol levels, but Crestor has been found to be more effective in reducing LDL cholesterol levels. The cost of these drugs can vary, but in general, the generic versions of both drugs are more affordable than the brand-name versions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/16186052/
[3] https://www.singlecare.com/blog/crestor-vs-lipitor/