Lipitor, a brand name for atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. Probiotics are live microorganisms that are beneficial to the body, particularly to the digestive system [2].

There is limited information on the potential interaction between Lipitor and probiotics. A study published in the Journal of Clinical Lipidology found that the use of statins, including atorvastatin, did not have a significant effect on the gut microbiome [3]. However, this study did not specifically investigate the use of probiotics in conjunction with statins.

Another study published in the journal Nutrients suggests that probiotics may actually have a positive effect on lipid metabolism, which could potentially complement the cholesterol-lowering effects of Lipitor [4].

Overall, there is currently no clear evidence to suggest that Lipitor will negatively affect the effectiveness of probiotics. However, as with any medication or supplement, it is always recommended to consult with a healthcare provider before starting a new regimen.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2904929/
[3] https://pubmed.ncbi.nlm.nih.gov/31495848/
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073249/