dexlansoprazole

noun

dex·​lan·​so·​pra·​zole ˌdeks-ˌlan-ˈsō-prə-ˌzōl 

: a drug C₁₆H₁₄F₃N₃O₂S that acts as a proton pump inhibitor to reduce gastric acid secretion and is administered orally in the treatment of heartburn associated with gastroesophageal reflux disease and to promote healing of acid-related erosive esophagitis

Note: Dexlansoprazole is the dextrorotatory enantiomer of lansoprazole. It is marketed under the trademark Dexilant.