Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. Vitamin D is a fat-soluble vitamin that helps the body absorb calcium and maintain healthy bones.

There is no evidence to suggest that combining Lipitor and vitamin D causes any significant side effects. However, it is important to consult with a healthcare provider before taking any new medications or supplements, as they may interact with each other or cause adverse effects.

According to the Drug Patent Watch [1], there are no known drug interactions between Lipitor and vitamin D. The study published in the QJM: An International Journal of Medicine [2] also did not report any significant adverse effects of combining atorvastatin and vitamin D. In fact, the study suggests that vitamin D supplementation may improve the effectiveness of atorvastatin in reducing cholesterol levels.

Another study published in PubMed [3] suggests that vitamin D supplementation may have a beneficial effect on muscle strength and function in patients taking statins, such as Lipitor. This is important because one of the side effects of statins is muscle pain or weakness.

In conclusion, there is no evidence to suggest that combining Lipitor and vitamin D causes any significant side effects. However, it is important to consult with a healthcare provider before taking any new medications or supplements, as they may interact with each other or cause adverse effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://academic.oup.com/qjmed/article/105/5/487/1565780
[3] https://pubmed.ncbi.nlm.nih.gov/18754003/