Eat well on an empty stomach, and Ejiao cake, Ejiao buccal tablets and colloidal peptides are better to eat and absorb on an empty stomach. Except for those with dyspepsia of the spleen and stomach, it can be changed to after meals, and those with flatulence can be changed to after meals. The reason is that many flora in the human intestine can produce gas, causing flatulence and farting to varying degrees. Prebiotics promote the growth and reproduction of intestinal beneficial bacteria. Patients with gastric ulcer and duodenal ulcer should pay more attention to themselves. If they feel sick, they should not continue to eat. For duodenal ulcer and bulbar ulcer, it is recommended to eat Ejiao buccal tablets instead of Ejiao cake. If they don't digest it, they will get worse.