Overview: Magnesium antacids are taken to help relieve indigestion, heartburn, or a sour stomach. You may notice that your poop may be loose, watery, or more frequent when taking a magnesium antacid.

Proton pump inhibitors (PPIs), a specific class of antacid drugs, are among the most widely used medications of all. They are frequently prescribed to many groups of patients, including those with ...