Some of the anal fissures can be cured by taking medicine. Anal fissures are divided into stage I, II and III. In the early stage of anal fissure, the internal medicine is mainly arranged according to the cause of anal fissure and the symptoms of anal fissure, mainly by softening the stool. There is another kind of painkillers. It is recommended that patients take painkillers half an hour before they have a bowel movement, because the drugs have a process to work, and it is easy to promote the healing of the fissure by maintaining good bowel habits after the patient is pain-free. Anal fissures are caused by ischemia, and there are some medical collections and papers on vasodilators, such as those for cardiovascular disease, which can also be used externally and internally. However, after a long period of anal fissures, internal use can only reduce the symptoms, but it is impossible to cure them completely. These drugs, which must be applied under the guidance of a specialized professional doctor, because anal fissures are also divided into multiple categories, multiple kinds, and multiple stages, so you must seek medical attention to see a doctor.