Esso 40mg Capsules – Acidity & Ulcer ReliefEsso Capsules 40mg Advanced Proton Pump Inhibitor for Acidity and Ulcer Treatment Esso Capsules 40mg contain Esomeprazole, a powerful proton pump inhibitor (PPI) used to treat severe acidity, heartburn, GERD (gastroesophageal reflux disease), and stomach or duodenal ulcers. Esomeprazole works by irreversibly binding to the H K ATPase enzyme system the proton pump responsible for the final step in acid secretion by stomach parietal cells. By blocking