Galacto-oligosaccharides (GOS) are basically prebiotics that feed the friendly intestinal bacteria. They are generally found in certain root vegetables, beans, and dairy products. They pass into the colon in undigested form. Once they reach the colon, they boost certain bacterial growth and enhance bowel mass. Galacto-oligosaccharides is known to aid many health conditions including hay fever, obesity, eczema, food allergies, colic, and constipation.