Different gastric drugs are taken at different times. Drugs that promote gastric motility need to be taken before meals; antacids need to be taken after meals; acid-suppressing drugs need to be taken on an empty stomach, usually half an hour before meals. 1. Drugs to promote gastric power: such as domperidone, itopride, mosapride, etc., these drugs can promote gastric power, taken before meals. 2. Antacid drugs: such as sodium bicarbonate, magnesium aluminum carbonate, aluminum hydroxide tablets, etc. After meals, stomach acid will be secreted too much, after meals to take gastric drugs can achieve the therapeutic effect of neutralization of gastric acid, to alleviate the patient’s gastric acid overload. 3. Acid-suppressing drugs: such as omeprazole, esomeprazole, pantoprazole and so on. These drugs need to be in an acidic environment to play a role in the effectiveness of the drug, so take before meals. When to take gastric drugs need to consult a doctor, according to their own conditions and drug instructions to decide, follow the doctor’s instructions, avoid self medication.