According to Annamaria Louloudis, MS, RDN, founder of Louloudi Nutrition, caffeine may trigger acid reflux symptoms because it works to relax the lower esophageal sphincter, causing reflux of stomach acid into the esophagus. Intake of coffee, tea, and soda (all caffeinated beverages) has been associated with an increased risk of gastroesophageal reflux symptoms.. Bid farewell to caffeinated beverages for GERD management.