What is the difference between Vivinal® GOS and FOS?

Vivinal® GOS originates from a dairy source. It is derived from lactose, which consists of the monosaccharides glucose and galactose. These monosaccharides can be found in human milk and they are part of the oligosaccharide structures present in breast milk. Fructo-oligosaccharides (FOS) are derived from chicory root and are of vegetable origin. Fructo-oligosaccharides consist of the monosaccharides fructose and glucose. The monomer fructose is not present in human milk.