Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, there is no clear evidence that Lipitor causes low salt levels in the body.

The first source, Drug Patent Watch [1], provides information on the patent status of Lipitor but does not mention any side effects related to low salt levels.

The second source, a study published in PubMed [2], investigates the potential link between statins, a class of drugs that includes Lipitor, and hyponatremia, a condition where there is a low level of sodium in the blood. The study concludes that there is no significant association between the use of statins and hyponatremia.

The third source, an article published in SpringerLink [3], discusses the side effects of atorvastatin and other statins. While the article mentions several potential side effects, including muscle pain and liver damage, it does not mention low salt levels as a side effect.

In summary, based on the sources provided, there is no clear evidence that Lipitor causes low salt levels in the body. However, as with any medication, it is important to discuss any concerns or potential side effects with a healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/33215235/
[3] https://link.springer.com/article/10.1007/s00228-020-03006-8