Pancreatitis is a rare but serious side effect of using Lipitor, a medication used to lower cholesterol levels. According to Drug Patent Watch [1], pancreatitis is listed as an infrequent side effect of Lipitor, meaning it occurs in less than 1% of users. However, a study published in the Journal of Clinical Lipidology [3] found that there is a significant association between atorvastatin (the active ingredient in Lipitor) use and acute pancreatitis. The study suggests that atorvastatin may increase the risk of acute pancreatitis, especially in those with pre-existing risk factors. Another study published in Medicine [2] also found that atorvastatin use is associated with acute pancreatitis. The study suggests that healthcare providers should be aware of this potential side effect and monitor patients who are taking atorvastatin for signs of pancreatitis. In summary, while pancreatitis is a rare side effect of Lipitor, studies suggest that there is an increased risk of acute pancreatitis in atorvastatin users. Patients taking Lipitor should be aware of this potential side effect and discuss any concerns with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2959220/
[3] https://journals.lww.com/md-journal/fulltext/2016/02150/atorvastatin_use_associated_with_acute.4.aspx