Irritable Bowel Syndrome (IBS) is one of the most common functional gastrointestinal disorders. It is primarily characterized by abdominal pain accompanied by changes in bowel habits and stool characteristics. The abdominal pain is related to bowel movements and generally improves after defecation. The symptoms are recurrent and tend to linger, showing a chronic pattern. This disease is of a functional nature. There are no organic changes in the body, meaning there are symptoms present but no other physical abnormalities. Thus, while IBS can be uncomfortable, it does not cause significant harm to the body. Probiotics can be used to adjust the gut flora and treat these symptoms, which can lead to some improvements.