Lipitor is a medication that is commonly used to lower cholesterol levels in the body. The active ingredient in Lipitor is atorvastatin calcium [1]. While there is no direct evidence to suggest that Lipitor causes vitamin D deficiency, some studies have suggested that there may be a link between the use of statins, such as Lipitor, and lower levels of vitamin D in the body [2][3].

One study published in the Journal of Clinical Lipidology found that patients taking statins had lower levels of vitamin D compared to those not taking statins [2]. The study also found that patients taking higher doses of statins had lower levels of vitamin D than those taking lower doses. However, the study did not specifically look at the use of Lipitor and its effect on vitamin D levels.

Another study published in the Journal of Investigative Medicine found that patients taking statins had lower levels of vitamin D compared to those not taking statins [3]. The study also found that patients taking higher doses of statins had lower levels of vitamin D than those taking lower doses. However, the study did not specifically look at the use of Lipitor and its effect on vitamin D levels.

While these studies suggest that there may be a link between the use of statins and lower levels of vitamin D, more research is needed to determine if there is a direct causal relationship between Lipitor and vitamin D deficiency. It is important for patients taking Lipitor to talk to their healthcare provider about their vitamin D levels and whether they may need to take supplements to maintain healthy levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/17398180/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5644425/