Wassup tablets can be used for the treatment of mouth ulcers. The main ingredient is cetiolium, which is the molecular iodine. Iodine molecule as an oxidizing agent can kill local pathogenic bacteria, viruses, etc. Therefore, when suffering from mouth ulcers, the use of Waso tablets can inhibit local bacterial secondary infection of ulcers. Without local bacteria, the mouth ulcer can repair itself and heal in a short time. However, if combined with other drugs, such as watermelon cream spray may further improve the treatment effect of mouth ulcers. In addition, the causes of mouth ulcers are complex and may be related to infection, abnormal autoimmune function, mental, stress, nutrient deficiency, local trauma, etc. Therefore, it is necessary to search for the cause carefully, and only after removing the cause can mouth ulcers be well controlled and recurrence reduced. Huasu tablets mainly work from reducing the risk of infection of local mouth ulcers, and can also be combined with the use of drugs to promote wound healing, supplementation of the appropriate vitamins, trace elements, etc., comprehensive treatment may have better results.