Pharmacology G.I.T 7ee03b52 Agent required to heal stress ulcers: A H2 blockers B Proton pump inhibitors C Antacids D Bismuth High-Yield Explanation Ans. A. H2 blockersH2 blockers like ranitidine are the most effective drug in healing stress ulcer. Whereas PPI are most effective in inhibiting the gastric acid secretion.