Can you eat when you have a mouth ulcer?

Oct 15, 2025 Source: Cainiu Health

Dr. Liu Chao

Introduction

Given the ability to eat normally, it is important to follow the principle of a bland diet by choosing lukewarm, soft, and easily digestible foods such as porridge, well-cooked noodles, and steamed eggs to minimize irritation to the ulcer surface. Additionally, chew food thoroughly and eat slowly to prevent food debris from remaining at the ulcer site and causing infection. After meals, use a mild mouthwash to clean the mouth and maintain hygiene at the wound site, thereby promoting healing.

Most people with oral ulcers can still eat normally. If the number of ulcers is small and pain is mild, not affecting swallowing, individuals may continue regular eating habits. However, if ulcers are large, painful, or accompanied by symptoms such as fever or difficulty swallowing, dietary adjustments are necessary, and in severe cases, medical intervention should be sought.

For those able to eat normally, a gentle diet is recommended. Choose lukewarm, soft foods such as porridge, well-cooked noodles, and steamed eggs to minimize irritation to the ulcerated areas. Chew slowly and thoroughly to prevent food debris from lodging in the ulcer site and causing infection. After meals, use a mild mouthwash to clean the mouth and maintain hygiene at the wound site, supporting faster healing.

If ulcers are severe, avoid spicy, acidic, hot, or hard foods temporarily, as these can irritate the ulcer, increase pain, and delay healing. If symptoms such as fever or severe pain during swallowing occur, a secondary infection may have developed from the ulcer. In such cases, seek medical attention promptly and follow a doctor’s instructions for anti-inflammatory or pain-relieving medications. Gradually resume normal eating after symptoms improve.

In addition, maintaining balanced nutrition in daily life is important. Supplementing with B-complex vitamins and vitamin C helps strengthen oral mucosal repair and promotes ulcer healing. It is advisable to visit a hospital promptly for appropriate examinations to assess overall health and receive standardized treatment under medical guidance.

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