According to the sources provided, there are no known interactions between Lipitor (atorvastatin) and vitamin D. Lipitor is a medication used to lower cholesterol levels in the blood, while vitamin D is a nutrient that helps the body absorb calcium and maintain healthy bones.

The first source, Drug Patent Watch [1], provides information on the patent status of Lipitor and does not address any potential drug interactions. The second source, a study published in the Journal of Clinical Endocrinology and Metabolism [2], discusses the relationship between vitamin D levels and the risk of cardiovascular disease, but does not mention Lipitor or any other medications.

The third source, Drugs.com [3], provides a tool for checking drug interactions. When Lipitor and vitamin D are entered into the tool, no interactions are found. However, it is always recommended to consult with a healthcare provider before taking any new medications or supplements, as individual circumstances and medical history may affect drug interactions.

In conclusion, based on the sources provided, there are no known interactions between Lipitor and vitamin D. However, it is important to consult with a healthcare provider before taking any new medications or supplements.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/18754003/
[3] https://www.drugs.com/drug-interactions/lipitor-with-vitamin-d3-276-128-646-5790.html