Lipitor is a medication used to treat high cholesterol, while vitamin D is a nutrient that helps the body absorb calcium and maintain healthy bones. According to Drugs.com, there are no known interactions between Lipitor and vitamin D supplements [3]. However, it is always best to consult with a healthcare professional before taking any new medications or supplements.

The safety of Lipitor has been extensively studied. It has been shown to be effective in reducing cholesterol levels and decreasing the risk of heart disease [1]. However, like all medications, Lipitor can cause side effects. The most common side effects include muscle pain and weakness, digestive problems, and headache [1].

A study published in the Journal of Clinical Endocrinology and Metabolism found that vitamin D supplementation did not have a significant effect on cholesterol levels in patients taking Lipitor [2]. The study also found that vitamin D supplementation did not have any adverse effects on the safety or effectiveness of Lipitor.

In conclusion, there are no known interactions between Lipitor and vitamin D supplements. However, it is always important to consult with a healthcare professional before taking any new medications or supplements. Lipitor has been shown to be effective in reducing cholesterol levels, but can cause side effects. Vitamin D supplementation does not appear to have any adverse effects on the safety or effectiveness of Lipitor.

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