A Study to Check the Safety of Dexlansoprazole and Learn if it Can Treat Symptomatic Nonerosive Gastroesophageal Reflux Disease in Children 2 to 11 Years Old

Gastroesophageal reflux disease (GERD) is caused by food or acid coming up from the stomach into the esophagus, repeatedly. The esophagus is the tube that carries food and liquids from the mouth to the stomach. The body uses stomach acid to break down food, but when acid rises up into the esophagus it can hurt or damage it. People with GERD often feel food coming back up into the throat and mouth and have a burning feeling in their stomach, chest, or throat, called heartburn. Other symptoms of GERD include pain in the stomach or throat, difficulty eating, and throwing up. Symptomatic nonerosive GERD is a condition where people have the symptoms of GERD but the esophagus has not been damaged. People of all ages can have GERD. The causes of GERD in children are similar to those in adults and teenagers. Dexlansoprazole is a medicine that has been shown to help relieve the symptoms of GERD in adults and teenagers. This study aims to find out if dexlansoprazole doses given to children with symptomatic nonerosive GERD, based on their body weight, helps them feel better.