There is no clinical statement on how to treat rectal ulcers the fastest and most complete. Rectal ulcers need to be treated with medication or surgery as prescribed by the doctor, depending on the specific condition. If the rectal ulcer has blood in the stool, diarrhea and so on, you can follow the doctor’s instructions to use mesalazine to carry on the treatment. If the patient’s rectal ulcer is caused by bacterial infection, the patient can take Norfloxacin, Levofloxacin, Amoxicillin and other antibiotics as prescribed by the doctor. If the rectal ulcer is caused by a tumor or develops into a rectal ulcer without timely treatment, the patient may be at risk of toxic megacolon, intestinal perforation, rectal cancer, etc. Surgical treatment, such as proctocolectomy, is usually recommended in order to control the further development of the disease. Therefore, if a patient develops a rectal ulcer, it is recommended to go to the hospital in time to clarify the condition and treat it as early as possible.