Patients who frequently suffer from oral ulcers are advised to consume less donkey-hide gelatin and avoid consuming it in large quantities. This is because excessive consumption of donkey-hide gelatin may lead to "internal heat" in some patients, which can exacerbate the condition of oral ulcers. If the donkey-hide gelatin is part of some traditional Chinese medicine formulas, it is generally safe to consume, and patients need not worry too much. However, patients who often suffer from oral ulcers must seek timely medical consultation to diagnose what causes their ulcers, as other systemic diseases can also cause ulcers. Therefore, it is advisable for patients to identify the cause early and formulate a specific treatment plan. If the occurrence of oral ulcers is occasional and mild, patients need not be overly concerned; topical anti-ulcer medication can be used and can be very effective in treatment.