Lipitor is a medication used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], Lipitor is a brand name for the drug atorvastatin, which was first approved by the FDA in 1996. The medication works by blocking an enzyme in the liver that produces cholesterol.

A study published in The New England Journal of Medicine [2] evaluated the efficacy of Lipitor in reducing cardiovascular events in patients with high cholesterol. The study found that Lipitor reduced the risk of major cardiovascular events by 36% in patients with high cholesterol. The study also found that Lipitor reduced LDL cholesterol levels by 39%.

Another study published in the Journal of Clinical Lipidology [3] evaluated the effects of different doses of atorvastatin on cholesterol levels in patients with high cholesterol. The study found that higher doses of atorvastatin were more effective in reducing LDL cholesterol levels than lower doses. The study also found that the higher doses of atorvastatin were generally well-tolerated by patients.

In conclusion, the sources suggest that Lipitor, or atorvastatin, is an effective medication for reducing cholesterol levels in the blood. The medication has been shown to reduce the risk of cardiovascular events and lower LDL cholesterol levels. Higher doses of atorvastatin may be more effective in reducing cholesterol levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nejm.org/doi/full/10.1056/nejmoa061894
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915405/