Lipitor is a prescription medication used to treat high cholesterol levels and reduce the risk of heart disease. It works by blocking an enzyme that produces cholesterol in the liver [1]. According to DrugPatentWatch, the most common side effects of Lipitor include muscle pain, diarrhea, and joint pain [1]. However, some studies have suggested that taking Lipitor may increase the risk of developing type 2 diabetes [3]. In fact, Pfizer, the manufacturer of Lipitor, has faced a surge of lawsuits over allegations that the drug caused diabetes in some patients [2]. One study published in the Journal of Diabetes Investigation found that taking Lipitor was associated with an increased risk of developing diabetes, especially in women and older patients [3]. Other potential side effects of Lipitor may include liver damage, memory loss, confusion, and muscle damage [1]. It is important to talk to a doctor before taking Lipitor or any other medication, as they can provide information about potential side effects and help determine if the medication is right for you.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.reuters.com/article/uk-pfizer-lipitor-lawsuits/insight-pfizer-confronts-surge-of-lawsuits-over-lipitor-idUKKBN0G814Y20140808
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4679305/