Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. A study published in the Journal of Atherosclerosis and Thrombosis found that patients taking atorvastatin did not experience significant cognitive impairment compared to those taking a placebo [2]. However, the FDA has issued a safety communication regarding the use of statin drugs, including atorvastatin, and the potential for cognitive effects such as memory loss and confusion [3]. The FDA advises patients to continue taking their medication as prescribed and to talk to their healthcare provider if they have any concerns. It is important to note that the benefits of statin drugs in reducing the risk of heart disease and stroke outweigh the potential risks of cognitive effects [3]. Therefore, patients should not stop taking their medication without consulting their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5830056/
[3] https://www.fda.gov/drugs/drug-safety-and-availability/fda-drug-safety-communication-important-safety-label-changes-cholesterol-lowering-statin-drugs