Dexlansoprazole MR stands for "Dexlansoprazole Modified/Release." It refers to a specific formulation of the medication dexlansoprazole, which is used to treat conditions related to excessive stomach acid production. Dexlansoprazole MR is commonly used for gastroesophageal reflux disease (GERD), erosive esophagitis, and other acid/related disorders. The "modified/release" aspect of this formulation indicates that the medication is designed to release the active ingredient slowly over an extended period of time. This can provide continuous acid suppression and symptom relief, which is particularly helpful in managing conditions that require prolonged control of stomach acid.