Stomach pain caused by hunger and fullness can take some drugs to inhibit gastric acid secretion or neutralize gastric acid and protect gastric mucosa, such as omeprazole and aluminum phosphate gel. 1. Omeprazole: Omeprazole belongs to the proton pump inhibitor, after absorbed through the small intestine, it can act on the stomach wall through the blood circulation to inhibit the secretion of gastric acid and protect the gastric mucous membrane, which can improve the symptoms of gastric pain, acid reflux and other discomforts. Adverse reactions such as nausea, diarrhea, constipation may occur when taking omeprazole, and it is forbidden for those who are allergic to omeprazole, and should not be combined with atazanavir. 2. Aluminum phosphate gel: belongs to the antacid drugs, can make the PH value of gastric acid increase, buffer gastric acid, but also in the stomach to form a colloidal protective film, protect gastric tissues from damage, but also improve the performance of stomach pain. Chronic renal failure and hyperphosphatemia patients are prohibited, may cause constipation and other adverse reactions. All of the above drugs need to be used under the guidance of a doctor, and it is recommended that people with stomach pain consult a professional doctor in time.