Omeprazole enteric-coated tablets are effective in the treatment of gastric ulcer, duodenal ulcer, stress ulcer, reflux esophagitis and other diseases. Omeprazole enteric-coated tablets are effective in the treatment of gastric ulcers, duodenal ulcers and also stress ulcers, reflux esophagitis and Helicobacter pylori infections, which can inhibit the secretion of gastric acid. Some patients may experience adverse reactions such as diarrhea, headache, nausea, abdominal pain, flatulence, constipation, rash, dizziness, drowsiness, insomnia and other adverse reactions after using Omeprazole enteric-coated tablets. It should be noted that patients with hepatic or renal insufficiency or allergy to this drug are prohibited from using this drug; this drug should be swallowed whole, not chewed or crushed to prevent premature release of drug particles in the stomach. The drug should be used under the supervision of a doctor, avoiding the use of private medication.