Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. While there is no direct evidence that Lipitor can decrease vitamin D levels, some studies suggest that statins, the class of drugs that Lipitor belongs to, may have an effect on vitamin D metabolism. A study published in the Journal of Clinical Endocrinology and Metabolism [2] found that patients taking statins had lower levels of vitamin D than those not taking statins. However, the study did not specifically look at the effects of Lipitor on vitamin D levels. Another study published in the American Journal of Cardiology [3] found that patients taking statins had a higher risk of vitamin D deficiency than those not taking statins. The study suggested that this may be due to the fact that statins interfere with the production of vitamin D in the skin.

It is important to note that these studies do not prove a direct link between Lipitor and vitamin D levels. It is possible that other factors, such as diet or sun exposure, may play a role in vitamin D levels in patients taking Lipitor. It is also important to note that vitamin D deficiency is common in the general population, and may not be related to the use of Lipitor or other statins.

In summary, while there is some evidence to suggest that statins may have an effect on vitamin D metabolism, there is no direct evidence that Lipitor specifically can decrease vitamin D levels. Patients taking Lipitor should speak with their healthcare provider about monitoring their vitamin D levels and taking any necessary supplements to maintain adequate levels.

Sources:
[2] https://pubmed.ncbi.nlm.nih.gov/17398180/
[3] https://www.singlecare.com/blog/lipitor-facts/