Nausea, heartburn, indigestion, upset stomach — anemia? Frequent sufferers of gastrointestinal symptoms may be doing more harm than good every time they reach for certain over-the-counter medications ...

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 ...

The study found that people taking PPIs had a much higher likelihood of reporting several serious kidney conditions. These ...