Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. Probiotics are live bacteria and yeasts that are good for your health, especially your digestive system. The sources suggest that taking atorvastatin with probiotics may decrease the effectiveness of the medication. This is because probiotics may interfere with the absorption of atorvastatin in the gut, reducing its concentration in the bloodstream [2]. The reduction in atorvastatin concentration may increase the risk of developing cardiovascular diseases. Therefore, it is recommended to avoid taking atorvastatin with probiotics [1][3]. However, it is always advisable to consult a healthcare professional before taking any new medication or supplement to avoid any potential adverse effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/
[3] https://www.drugs.com/drug-interactions/atorvastatin-with-probiotic-formula-276-0-3205-15943.html