It is best not to drink yogurt during the attack of duodenal ulcer patients, but you can drink some yogurt in moderation during the recovery period, as follows: 1. During the attack of duodenal ulcer is manifested as epigastric discomfort, abdominal distension and pain, acid reflux, belching, eructation, nausea, vomiting and loss of appetite. But be careful not to drink yogurt just out of the refrigerator, and do not drink too much yogurt at once, otherwise it will be a burden on the stomach and intestines.