People with gastric problems can’t drink the medicine for colonoscopy. You need to drink with warm water to dilute the medicine for cleaning the intestines 4 to 6 hours before doing colonoscopy, and drinking a large amount of water will not cause electrolyte disorders, so as to achieve the effect of cleaning the intestines and to ensure the successful completion of the intestinal examination. Patients who have gastric problems should try not to drink beverages, because most beverages contain too much carbonic acid, which produces a large amount of gas after drinking, which will make the patient have reactions such as stomach distension and stomach pain. So you can’t drink drinks for colonoscopy, but you need to dilute the intestinal cleansing medication proportionally with warm water. Patients with stomach problems are advised to consult their doctors and take their advice before drinking intestinal cleansing medications. One week before the colonoscopy, it is recommended to have a light diet and consume more easily digestible food.