Antibiotics, Antacids, and Other Gut Disruptors

Some meds save lives—but they might also wipe out your gut’s good guys.

Antibiotics kill harmful bacteria—but they also wipe out beneficial microbes, sometimes leading to imbalances like Candida overgrowth or Clostridium difficile infection. Long-term antacid use can alter stomach pH and reduce microbial diversity, disrupting digestion (Jackson et al., 2016). NSAIDs, antidepressants, and even laxatives can affect the gut lining and microbiome. While medications often play a vital role in managing health, they aren’t without consequence to the gut.

Citation: Jackson MA, Goodrich JK, Maxan M-E, et al. (2016). Proton pump inhibitors alter the composition of the gut microbiota. Gut, 65(5), 749–756.

When taking antibiotics, ask your doctor if probiotics are recommended alongside. Space out probiotics at least 2–3 hours after the antibiotic dose. After finishing treatment, focus on high-fiber and fermented foods to rebuild microbial diversity. Minimize unnecessary antacid use—consider lifestyle changes like elevating the head during sleep or reducing trigger foods. Keep track of how medications affect your digestion. Knowledge is power: if you must use a gut-disruptive med, support your microbiome like it’s under renovation.