You can generally eat bread three hours after ordinary gastroenteroscopy, while you cannot eat bread three hours after gastroenteroscopy for treatment and biopsy.
Ordinary gastroenteroscopy is mainly to observe the lesions of the gastrointestinal mucosa through endoscopy, and the damage to the gastrointestinal mucosa is generally not significant. If it is an ordinary gastroenteroscopy, you can eat after half an hour; if it is a painless gastroenteroscopy, you need to eat after two hours, usually start with water and liquid food, and you can eat normally without discomfort, so you can eat bread after three hours.
If gastroenteroscopy is given to treat or take biopsy, generally based on the size and depth of trauma to determine the time of fasting and water, generally need to fast for at least 12-24 hours before liquid, semi-liquid food. So you can’t eat bread three hours after treatment or biopsy.
You should consult your attending physician on how long you can eat after gastroenteroscopy, and seek medical attention if you have any discomfort.