Based on the information available, there is no inherent interaction between Lipitor (atorvastatin), a cholesterol-lowering medication, and vitamin D supplements.

Lipitor belongs to a class of drugs known as statins, which work by reducing the amount of cholesterol your body absorbs and by helping your body make less cholesterol [1]. On the other hand, vitamin D supplements are typically used to ensure adequate levels of vitamin D in the body, which is crucial for bone health, immune function, and other biological processes [2].

However, it is always important to consult with a healthcare provider or pharmacist before starting or changing any medications or supplements, as individual health situations can vary. They can provide personalized advice based on an individual's health history, current medications, and other factors.

Sources:

1. U.S. National Library of Medicine. (2021). Atorvastatin. MedlinePlus. Retrieved from <https://medlineplus.gov/druginfo/meds/a601244.html>
2. National Institutes of Health. (2021). Vitamin D. Office of Dietary Supplements. Retrieved from <https://ods.od.nih.gov/factsheets/VitaminD-Consumer/>
3. DrugPatentWatch. (2021). Lipitor (atorvastatin) Drug Patent Expiration & Generic Launch Dates. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>