Doctor reveals why your acid reflux pill may not be as harmless as you think

Proton pump inhibitors—or PPIs—have revolutionized treatment for acid-related conditions. They can heal ulcers, ease gastroesophageal reflux disease (GERD), and even be life-saving in certain cases.

But as Dr. Kunal Sood-MD wisely cautions, these aren’t “forever pills” for everyone. When used for years without monitoring, PPIs may quietly contribute to a range of deficiencies and health risks. Quietly, years of use can open the door to nutrient deficiencies, bone loss, and even infections. Here’s what you should know before turning short-term relief into a lifelong habit.

Magnesium keeps your muscles, nerves, and heart rhythm steady. The FDA has warned that long-term PPI use can lower magnesium levels, sometimes causing cramps, irregular heartbeats, or seizures. Case reports show symptoms improved once PPIs were stopped and magnesium restored. For most people, this doesn’t happen overnight—it builds quietly over years, especially if you’re also taking water pills or heart medications.

Vitamin B12 helps with memory, mood, and red blood cells. After two or more years on PPIs, the chance of deficiency goes up—one Kaiser Permanente study found a 65% higher risk. Low B12 can cause tingling in hands or feet, fatigue, or even memory problems. The risk is higher for older adults, whose absorption is already slower.

Iron needs stomach acid to be absorbed, especially from plant foods. Suppressing acid long-term can make this harder, raising the odds of anemia. That shows up as tiredness, pale skin, or restless legs. Research points to a 3.6 times higher risk of iron deficiency in chronic users.

Stomach acid also helps calcium absorption. With less of it, bones may not get the support they need. Studies have found PPI users have a 20–30% higher chance of hip, spine, or wrist fractures. That risk is most concerning in older adults or anyone with osteoporosis.

Your stomach acid is part of your body’s defense system. Dial it down too much, and harmful bacteria may get through. Research links PPIs with higher rates of infections like Clostridioides difficile, which causes severe diarrhea.