Proton pump inhibitors, often called PPIs, are among the most widely used medications for stomach acid problems. Many people have taken drugs such as Prilosec, Nexium, or Prevacid to relieve heartburn, acid reflux, or stomach irritation.
These medicines work by lowering the amount of acid produced in the stomach. For people who suffer from frequent burning pain in the chest or throat caused by stomach acid, PPIs can provide strong and lasting relief.
Heartburn and acid reflux are very common conditions. They occur when stomach acid flows backward into the esophagus, the tube that carries food from the mouth to the stomach. This condition is known as gastroesophageal reflux disease, or GERD.
Over time, repeated acid exposure can damage the lining of the esophagus and cause pain, coughing, or difficulty swallowing. Because of these symptoms, many doctors prescribe PPIs to reduce stomach acid and protect the digestive system.
In the United States, these medications are extremely common. Studies estimate that about one in ten adults regularly takes a proton pump inhibitor. Some people use them for a few weeks, while others take them for months or even years.
In many cases, the drugs are available without a prescription, which means people may continue using them long after their symptoms improve.
Although PPIs are considered effective for treating acid-related problems, scientists have recently begun studying whether long-term use could cause unexpected health issues. A new study led by researchers at the University of California San Diego has raised concerns about the possible effects of these drugs on kidney health.
The research team examined data from the U.S. Food and Drug Administration’s Adverse Event Reporting System, often called FAERS.
This large database collects reports from patients and healthcare professionals about side effects and health problems that may occur while taking medications. The database includes more than ten million reports covering many different drugs.
To better understand the possible risks linked to proton pump inhibitors, the researchers focused on people who reported using only PPIs and compared them with people who took another type of medication for heartburn known as histamine‑2 receptor blockers.
These drugs include medications such as Zantac and Pepcid. Although both types of drugs treat acid-related symptoms, they work in different ways and are sometimes considered milder treatments.
The study examined reports from about 43,000 people who had taken only PPIs and about 8,000 people who had taken only histamine‑2 receptor blockers. When the researchers compared the two groups, they noticed a large difference in the number of reported kidney problems.
Among people who used only proton pump inhibitors, about 5.6 percent reported experiencing kidney-related health problems.
In contrast, only about 0.7 percent of those who used the other type of heartburn medication reported similar issues. This large gap suggested that people taking PPIs might face a significantly higher risk of kidney complications.
One of the most concerning findings was the link between PPIs and chronic kidney disease. Chronic kidney disease is a long-term condition in which the kidneys gradually lose their ability to filter waste from the blood.
According to the study results, people taking proton pump inhibitors were nearly thirty times more likely to report chronic kidney disease than those using the alternative medication.
The researchers also found increased reports of several other kidney-related conditions among PPI users. These included acute kidney injury, which is a sudden loss of kidney function, as well as end-stage kidney failure, a serious condition that may require dialysis or a kidney transplant.
In addition, the study found higher reports of problems involving electrolyte levels in the body. Electrolytes are important minerals that help control nerve signals, muscle function, and fluid balance. When electrolyte levels become abnormal, it can affect many organs and systems in the body.
These findings support earlier studies that have raised questions about the long-term safety of proton pump inhibitors. In fact, a previous study from the same research group in 2017 suggested that long-term PPI use might also be linked to an increased risk of chronic liver disease.
It is important to understand that PPIs can still be very helpful for people who truly need them. For individuals with severe GERD, stomach ulcers, or other serious digestive conditions, these medications may be necessary to prevent complications and relieve symptoms.
However, the new research suggests that doctors and patients should carefully consider whether long-term use is truly needed.
Medical experts now recommend that doctors regularly review whether patients still need PPIs, especially if they have been taking them for a long time. In some cases, people with mild symptoms may be able to switch to a different medication with fewer potential risks. Others may benefit from lifestyle changes that reduce acid reflux naturally.
Simple changes such as eating smaller meals, avoiding spicy or fatty foods, losing excess weight, quitting smoking, and not lying down immediately after eating can often help reduce heartburn symptoms. These steps may allow some people to reduce their dependence on medication.
Patients should never stop taking prescribed medication suddenly without medical advice. Anyone concerned about the possible risks of proton pump inhibitors should talk with their doctor about their treatment plan. A healthcare professional can help decide whether the medication is still necessary or if other options might be safer.
The study was led by researcher Ruben Abagyan and his team and was published in the scientific journal Scientific Reports.
The research highlights the importance of continuing to study the long-term effects of commonly used medications. As scientists learn more about these drugs, both doctors and patients can make better decisions that balance symptom relief with long-term health.
If you care about kidney health, please read studies about how to protect your kidneys from diabetes, and drinking coffee could help reduce risk of kidney injury.
For more information about kidney health, please see recent studies about foods that may prevent recurrence of kidney stones, and eating nuts linked to lower risk of chronic kidney disease and death.
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