Mouth ulcer is a common disease, and such patients can eat moderately more vitamin-rich foods such as apples, spinach, carrots, bitter melon, strawberries, oranges and grapefruit, as well as foods containing zinc and iron in their daily lives. During the onset of the disease, the diet should be less irritating, fine and soft, and easy to chew. Patients with severe disease and pain can choose a semi-liquid or liquid diet.
It is important to note that diet is only one part of the treatment and the severity of the disease varies from patient to patient, so it is recommended to consult a medical professional if you are unwell. Your physician will be able to develop an appropriate treatment plan for your specific case and give you reasonable dietary advice.