Lipitor is a brand name for atorvastatin, which is a type of medication known as a statin. Statins are used to lower cholesterol levels in the blood and reduce the risk of heart disease [3]. According to the sources provided, there is no evidence to suggest that Lipitor increases sodium levels in the body.

The first source, Drug Patent Watch [1], provides information on the patent status of Lipitor. It does not mention anything about the drug's effects on sodium levels.

The second source, a study published in the journal "Clinical Chemistry" [2], investigates the effects of statins on various biomarkers in the body, including sodium levels. The study found that there was no significant change in sodium levels in patients taking statins, including atorvastatin (Lipitor).

The third source, Healthline [3], provides general information on statins and their side effects. It lists common side effects of statins, such as muscle pain and liver damage, but does not mention anything about increased sodium levels.

In conclusion, based on the sources provided, there is no evidence to suggest that Lipitor increases sodium levels in the body. However, as with any medication, it is important to talk to your doctor about potential side effects and any concerns you may have.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/18065809/
[3] https://www.healthline.com/health/high-cholesterol/statins-list-of-common-types