Omeprazole Sodium for Injection is used for: ① Bleeding from peptic ulcers and bleeding from anastomotic ulcers. ② Acute gastric mucosal lesions complicated in stress states and acute gastric mucosal injuries caused by non-steroidal anti-inflammatory drugs. ③ It is also commonly used for preventing rebleeding after gastric surgery in severe diseases (such as cerebral hemorrhage, severe trauma, etc.). ④ To prevent the reflux of gastric acid combined with aspiration pneumonia in patients after general anesthesia or major surgeries as well as in debilitated and comatose patients.