Combining Lipitor (atorvastatin) and probiotics may not have any significant side effects, based on the information from the provided sources.

Lipitor is a medication used to lower cholesterol levels in the body [1]. According to the National Health Service (NHS), there is no specific interaction mentioned between atorvastatin and probiotics [2]. This suggests that combining the two is unlikely to cause any adverse effects.

Furthermore, a study published in the National Center for Biotechnology Information (NCBI) suggests that probiotics may have a positive impact on lipid metabolism, potentially enhancing the effectiveness of lipid-lowering medications like atorvastatin [3]. The study indicates that probiotics can help improve cholesterol levels and reduce the risk of cardiovascular disease.

While these sources do not mention any side effects specifically related to combining Lipitor and probiotics, it is always recommended to consult with a healthcare professional or pharmacist before starting any new medication or supplement regimen. They can provide personalized advice based on your specific health conditions and medications.

In summary, based on the information provided, there are no known significant side effects associated with combining Lipitor and probiotics. However, it is important to consult with a healthcare professional for personalized advice.

Sources:
[1] Drug Patent Watch. Lipitor - Trademark Details. Retrieved from: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] NHS. Atorvastatin: Taking atorvastatin with other medicines and herbal supplements. Retrieved from: https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] National Center for Biotechnology Information. Probiotics and Their Potential Preventive and Therapeutic Role for Cardiovascular Disease: Evidence from Preclinical and Clinical Studies. Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5438352/