Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. According to a study published in the National Center for Biotechnology Information, atorvastatin does not cause a significant decrease in potassium levels in the blood [2]. However, it is important to note that some medications used to treat high cholesterol levels, such as bile acid sequestrants, can interfere with the absorption of potassium in the intestines, leading to potassium deficiency [3]. It is always recommended to discuss any concerns about potential side effects with a healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4357351/
[3] https://www.goodrx.com/drugs/side-effects/these-drugs-can-mess-with-your-potassium