After the painless gastroscopy, a small amount of liquid food can be eaten at an interval of about 2 hours, and if there is no discomfort, normal diet can be resumed gradually.
Painless gastroscopy requires injection of short-acting anesthetics, and you should not eat before the anesthesia wears off, otherwise choking, accidental inhalation or even suffocation may occur. Generally, it takes about 2 hours for the effects of painless gastroscopy anesthetics to completely disappear.
If painless gastroscopy invasive operation, such as polypectomy, then the postoperative resumption of eating time needs to be extended, generally for the postoperative should be fasting water for 24 hours, after 24 hours can enter the clear liquid food, if there is no special discomfort, and then can gradually return to the liquid or semi-liquid food.