esomeprazole
nounUS /ˌɛs.oʊˈmɛp.ɹəˌzoʊl/
Etymology From es- (“S-configuration”) + omeprazole.
1
Medicine, Pharmacology, Sciences An isomer of omeprazole (trademark Nexium) that is administered in the form of its magnesium salt (C₁₇H₁₈N₃O₃S)₂Mg especially in the treatment of erosive esophagitis, gastroesophageal reflux disease, and duodenal ulcer.