Food supplement based on natural ingredients (MH Innovabuffer TM, sodium alginate and Opuntia ficus-indica (Prickly pear cactus)) in drinkable sticks, developed for optimal distribution on the esophageal mucosa. Gastroesophageal reflux is the most common digestive problem in Western countries and consists of the rise of part of the stomach contents into the esophagus, damaging its walls and giving rise to the frequent sensation of heartburn. Reflux problems can be partially prevented with the use of antacids (they increase the pH of the stomach), although it must be taken into account that the cause of damage to the esophagus is not only the acid (also pepsin, bile salts, etc.) and it is necessary to maintain an acidic pH in the stomach for its correct digestive and protective function. For this reason, new approaches to gastroesophageal reflux involve direct protection of the esophagus without altering the physiological conditions of the stomach. How to use: Drink 1 stick after lunch and/or dinner. Do not dilute the contents of the sachet and avoid drinking or eating for 10 minutes after ingestion.