2'-Fucosyllactose is widely used as a key ingredient in infant formula to mimic the composition of human milk. It supports the development of a healthy gut microbiome in infants by promoting the growth of beneficial bacteria like Bifidobacteria. Additionally, it plays a role in enhancing immune function and protecting against infections by blocking the attachment of harmful pathogens to the gut lining. Beyond infant nutrition, it is also being explored for its potential in dietary supplements and functional foods aimed at improving gut health and overall immunity in adults.