Dexlansoprazole Capsule is a prescription drug that is a type of medicine called a proton pump inhibitor (PPI). It is used to treat a variety of conditions, including gastroesophageal reflux disease (GERD), heartburn, and stomach ulcers. The drug is meant to suppress the stomachs production of stomach acid. This helps to prevent the risk of developing esophageal ulcers. Dexlansoprazole Capsule is an over-the-counter medication that helps to reduce symptoms of heartburn. It is an antacid that contains a combination of ingredients that help to reduce the production of stomach acid. It also contains a medication called lansoprazole that helps to reduce the amount of acid produced.