There is no known interaction between Lipitor (atorvastatin) and antacids. Lipitor is a medication used to lower cholesterol levels in the blood [1]. Antacids are medications used to neutralize stomach acid and relieve heartburn, acid indigestion, and upset stomach [2]. According to PeaceHealth, antacids are generally safe and can be taken with most medications, including statins like Lipitor [3]. However, it is always important to consult with a healthcare provider before taking any new medications or supplements, as they can advise on potential interactions and any necessary precautions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.everydayhealth.com/antacids/guide/
[3] https://www.peacehealth.org/medical-topics/id/hn-1090009