Nexium Costo 40 mg Generic Nexium How To Buy Nexium Generic Over The Counter. Nexium (Esomeprazole) is a Proton Pump Inhibitor (PPI) used to treat heartburn, or gastroesophageal reflux. It may be used in combination with two antibiotics to treat helicobacter pylori (h. Pylori infection and duodenal ulcers. It may also be used to treat […]