There is no “omeprazole and magnesium aluminum carbonate which safety is good” statement, omeprazole and magnesium aluminum carbonate have their own adverse reactions. Omeprazole has the effect of inhibiting gastric acid secretion, used in the treatment of gastric ulcer, duodenal ulcer, reflux esophagitis, stress ulcers and other diseases; allergic to this product, severe renal insufficiency and infants and young children are prohibited from using this drug; diarrhea, headache, nausea, abdominal pain, rash, dizziness, drowsiness, insomnia, and other adverse reactions after taking the drug. Magnesium aluminum carbonate can play a role in protecting the gastric mucosa, and can be used to treat acute and chronic gastritis, peptic ulcer, reflux esophagitis and other diseases; it is forbidden for those who are allergic to any ingredients in this product, severe renal damage, hypophosphatemia and other patients; after using the drug, there may be soft pasty stools, diarrhea and vomiting, constipation, dry mouth and loss of appetite, allergies and other adverse reactions. Omeprazole and magnesium aluminum carbonate have their own adverse reactions, so there is no “omeprazole and magnesium aluminum carbonate which safety is better” this statement. The adverse effects of both are usually reversible after discontinuation of the drug and are not a cause for concern. Patients who need to use Omeprazole or Magnesium Aluminum Carbonate for treatment should use the drug under the guidance of a doctor, and should not use it by themselves.