Coffee (Regular and Decaffeinated) You may love your cup of Joe each morning, but your coffee may be doing you more harm than good if you suffer from acid reflux or even occasional heartburn.  The high acid content in coffee along with the caffeine will cause the lower esophageal sphincter (LES) muscles to relax allowing stomach acid to enter the esophagus, which is what causes reflux.  Tea (caffeinated and decaffeinated) Just like coffee, both caffeinated and decaffeinated tea... Read More