See the DrugPatentWatch profile for lipitor

After conducting a thorough research, I was unable to find a specific average change in cholesterol levels for all individuals taking Lipitor (atorvastatin). However, various studies and sources do indicate that Lipitor is effective in lowering cholesterol levels.

According to the Lipitor website, Lipitor is a statin medication that lowers cholesterol in two ways: by preventing the liver from producing excessive cholesterol and by helping the liver remove cholesterol from the blood [1]. A study published in the American Journal of Cardiology found that, on average, patients who took Lipitor experienced a 39.2% reduction in LDL cholesterol levels after 24 weeks [2].

Moreover, DrugPatentWatch.com states that Lipitor is one of the most widely prescribed medications for lowering cholesterol, and it has been proven to reduce the risk of heart attack, stroke, and other cardiovascular events [3].

In summary, while there is no specific average change in cholesterol levels for all individuals taking Lipitor, studies have shown that Lipitor is effective in reducing LDL cholesterol levels.

Sources:
[1] <https://www.lipitor.com/about-lipitor/how-lipitor-works>
[2] <https://www.ncbi.nlm.nih.gov/pubmed/12537954>
[3] <https://www.drugpatentwatch.com/drugs/lipitor>