It is usually not possible to take stomach medication before a gastroscopy, and gastroscopy is usually performed on an empty stomach. It is usually not recommended to eat or take medication before a gastroscopy, which requires the patient to have an empty stomach. The day before the gastroscopy is generally not recommended to eat after dinner, gastroscopy patients need to maintain at least 6 to 8 hours of fasting time. If you take medication before gastroscopy, the medication may adhere to the surface of the gastric mucosa, which will affect the field of vision during gastroscopy, and may cause misdiagnosis or omission of diagnosis. It is recommended that patients try to maintain a low residue, light diet the day before gastroscopy, and avoid spicy and stimulating foods after gastroscopy. If the patient has certain diseases and needs to take medication, it is recommended to ingest some fluids 2 hours after the gastroscopy before taking the medication.