Sidi Iodine tablets are effective in the treatment of mouth ulcers. The main component of the tablet is iodine molecules, which are generally taken in the mouth and released under the action of saliva. The iodine molecules have a strong oxidizing effect and can kill harmful bacteria and viruses in the mouth. Oral ulcers have localized mucosal breakage, which is difficult to heal if there is bacterial or viral infection, so it is easier to heal after taking Sidi Iodine tablets to kill harmful microorganisms in the mouth. Because the mucous membrane itself has strong repairing ability, it will renew and repair in a short time, so it will heal easily as long as there is no infection. After taking the tablets orally, it has the function of preventing infection and promoting repair of oral ulcers, and it can also be used together with other drugs, such as local use of rehabilitation new liquid gargle, or topical application of fibroblast growth factor, which can better promote the healing of oral ulcers. However, the key to mouth ulcer treatment is still to prevent recurrence, you need to avoid stress, strain, and supplement vitamins, trace elements, etc. if necessary.