Lipitor is a medication that is commonly prescribed to lower cholesterol levels in patients. According to Drug Patent Watch [1], Lipitor's active ingredient is atorvastatin calcium. The drug is generally well-tolerated, but it can cause side effects, especially in elderly patients.

A study published in the National Center for Biotechnology Information [2] found that Lipitor is effective in reducing the risk of cardiovascular disease in the elderly population. However, the study also notes that elderly patients may be more susceptible to side effects from statins, such as Lipitor, due to age-related changes in the liver and kidneys.

The side effects of Lipitor in elderly patients can include muscle pain, weakness, and fatigue, which may be more severe in older adults. Additionally, the risk of developing type 2 diabetes may be increased in elderly patients taking statins like Lipitor [3].

It is important for elderly patients to be closely monitored by their healthcare provider when taking Lipitor. Patients should report any unusual symptoms or side effects to their doctor immediately. Overall, while Lipitor can be an effective medication for lowering cholesterol levels in elderly patients, it is important to weigh the potential benefits against the potential risks and side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915405/
[3] https://www.ucsf.edu/news/2015/04/125236/statin-use-elderly-would-prevent-disease-could-carry-considerable-side-effects