Based on the information available, there is no direct evidence to suggest that taking Lipitor, a medication used to treat high cholesterol, affects Vitamin D absorption in the human body [1].

Lipitor, also known as Atorvastatin, works by blocking a substance your body needs to make cholesterol [2]. On the other hand, Vitamin D is a fat-soluble vitamin that is crucial for calcium absorption, bone health, and immune system function [3].

While both Lipitor and Vitamin D can interact with the digestive system, specifically the small intestine, where absorption of fat-soluble vitamins like Vitamin D occurs [4], there is no specific scientific evidence or clinical studies indicating that Lipitor directly affects Vitamin D absorption [1].

However, it is important to note that certain conditions, such as gastrointestinal disorders or surgeries, can affect the absorption of both medications and vitamins [5]. Therefore, if you have concerns about your medications or vitamin levels, it is always best to consult with a healthcare professional or pharmacist [6].

Sources:
[1] https://www.drugpatentwatch.com/
[2] https://medlineplus.gov/druginfo/meds/a601263.html
[3] https://ods.od.nih.gov/factsheets/VitaminD-Consumer/
[4] https://www.ncbi.nlm.nih.gov/books/NBK222309/
[5] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3316390/
[6] https://www.fda.gov/drugs/resources-information-approved-drugs/questions-and-answers-atorvastatin-calcium-tablets-lipitor