Based on the available information, there is no evidence to suggest that TUMS, an antacid medication, can neutralize Lipitor's stomach side effects. Lipitor, also known as atorvastatin, is a prescription medication used to treat high cholesterol and prevent heart disease [1]. Common side effects of Lipitor include muscle pain, liver damage, and digestive issues such as diarrhea, constipation, and gas [2].

Antacids like TUMS work by neutralizing stomach acid, which can help relieve symptoms of acid reflux and heartburn [3]. However, there is no scientific evidence to support the use of antacids to alleviate the side effects of Lipitor or other statin medications [3].

It is important to note that Lipitor and other statins should be taken as directed by a healthcare professional, and any concerns about side effects should be discussed with a doctor or pharmacist [2]. Self-treating side effects with over-the-counter medications like TUMS may not be effective and could potentially interact with other medications [3].

In summary, while TUMS can be effective in treating symptoms of acid reflux and heartburn, there is no evidence to suggest that it can neutralize Lipitor's stomach side effects. Any concerns about Lipitor side effects should be discussed with a healthcare professional.

Sources:
[1] DrugPatentWatch. (n.d.). Lipitor. Retrieved from <https://www.drugpatentwatch.com/p/tradename/LIPITOR>
[2] National Center for Biotechnology Information. (2021). Adverse Effects of Statins: A Literature Review. Retrieved from <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7238301/>
[3] Everyday Health. (n.d.). Antacids: OTC Relief for Heartburn and Acid Reflux. Retrieved from <https://www.everydayhealth.com/antacids/guide/>