The most common vegetable is spinach, which contains a lot of vitamin C and oxalic acid, and some people are uncomfortable with spinach because oxalic acid causes irritation to the stomach. The discomfort will be reduced. Some people who are uncomfortable with eating spinach have gastritis, gastric ulcer and other diseases that need to be treated in order to improve. The dietary fiber in vegetables can stimulate excessive secretion of gastric acid causing stomach discomfort, in which case omeprazole can be used to block the secretion of gastric acid, thus relieving stomach pain. Most patients with gastritis and gastric ulcer will have slowed gastric motility. Taking domperidone can promote peristalsis of the stomach and duodenum, allowing the food in the stomach to empty as soon as possible and avoiding the effects of spinach on the mucosa of the stomach wall. Pectin bismuth can isolate gastric acid and pepsin, and also promote gastric mucosa repair, which can shorten the treatment time of gastritis and gastric ulcer.