Lipitor is a medication used to lower cholesterol levels and prevent cardiovascular disease. According to DrugPatentWatch [1], the active ingredient in Lipitor is atorvastatin calcium, which works by inhibiting an enzyme that is involved in the production of cholesterol in the liver.

While hyperglycemia, or high blood sugar levels, is not listed as a common side effect of Lipitor on the drug's label, a study published in Scientific Reports [2] found a potential link between atorvastatin and hyperglycemia. The study analyzed data from a large health insurance database and found that patients taking atorvastatin had a higher risk of developing hyperglycemia compared to patients taking other statins. However, the study authors noted that further research is needed to confirm this association.

Another study published in the Journal of Diabetes Research [3] also found a potential link between atorvastatin and hyperglycemia. The study involved diabetic patients who were taking atorvastatin and found that the medication was associated with an increase in fasting blood glucose levels.

In conclusion, while hyperglycemia is not listed as a common side effect of Lipitor, there is some evidence suggesting a potential link between atorvastatin and high blood sugar levels. Patients taking Lipitor should be aware of this potential risk and discuss any concerns with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nature.com/articles/s41598-019-45369-8
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4926726/