It is a dietary supplement for special medical purposes (DADFMS) formulated with sodium butyrate. It meets the nutritional needs of people with irritable bowel syndrome. Irritable bowel syndrome is the most common gastrointestinal disorder. It is a functional disease of the large intestine that generates a set of symptoms such as bloating, alternating diarrhea-constipation, cramping or fatigue. These symptoms are due to involuntary contractions of the colon muscles. Ultimately, this leads to changes in the intestinal microflora. Sodium butyrate is a fatty acid produced by bacteria that make up the intestinal flora from dietary fibers (cereals, fruits, vegetables). This fatty acid is the main source of energy for colonocytes, the cells that line the colon.