esomeprazole peptic ulcer drug molecule (proton pump inhibitor). atoms are represented as spheres with conventional color coding:

esomeprazole esomeprazola esomeprazol proton pump inhibitor stomach acid atpase protonpump parietal cell peptic ulcer dyspepsia reflux enantiomer omeprazole helicobacter pylori gastric heartburn digestive digestion eradication hydrogen carbon nitrogen oxygen sulfur disease drug therapy medicine medicinal product pharmacology pharmacy pharmaceutical pharma treatment generic molecule atoms chemical chemistry composition atomic model molecular