Lipitor is a medication used to lower cholesterol levels, while vitamin D is a nutrient that helps the body absorb calcium and maintain bone health. Based on the sources provided, there are no known interactions between Lipitor and vitamin D.

According to DrugPatentWatch [1], Lipitor's active ingredient is atorvastatin calcium, which works by inhibiting an enzyme that produces cholesterol in the liver. The medication is generally well-tolerated, but may cause side effects such as muscle pain, liver problems, and digestive issues.

A study published in PubMed [2] investigated the effects of atorvastatin on vitamin D levels in patients with high cholesterol. The study found that atorvastatin did not significantly affect vitamin D levels in the patients.

Drugs.com [3] also indicates that there are no known interactions between Lipitor and vitamin D. However, it is always important to consult with a healthcare provider before taking any new medications or supplements, as individual circumstances may vary.

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 to ensure their safety and efficacy for individual circumstances.

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