After conducting research based on the available information, I found that there are no known direct interactions between Lipitor (atorvastatin) and antibiotics that would prevent them from being taken together. However, certain antibiotics can impact the way the body metabolizes Lipitor, which could increase the risk of side effects or reduce the drug's effectiveness.

For instance, some antibiotics, such as rifampin, can affect the metabolism of Lipitor by inducing the cytochrome P450 3A4 isoenzyme, which is responsible for breaking down Lipitor in the body [1]. This can lead to decreased plasma concentrations of Lipitor and potentially reduce its effectiveness.

It is essential to consult a healthcare professional or pharmacist for personalized advice, as they can evaluate potential interactions based on an individual's medical history and current medications. They can help determine if dose adjustments or monitoring are necessary when combining Lipitor with antibiotics or any other medications.

Sources:

[1] Drugs.com. (2021). Atorvastatin and Rifampin. Retrieved from https://www.drugs.com/drug-interactions/atorvastatin-and-rifampin-13-5-257-1076-1118.html

[2] DrugPatentWatch.com. (n.d.). Lipitor (Atorvastatin Calcium). Retrieved from https://www.drugpatentwatch.com/drugs/lipitor

Please note: The information provided is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.