Lacto-N-fucopentaose I is widely used in the development of infant formula to mimic the composition of human milk oligosaccharides (HMOs). It plays a crucial role in promoting the growth of beneficial gut bacteria, which supports a healthy gut microbiome in infants. Additionally, it helps enhance immune function by acting as a decoy for pathogens, preventing them from binding to the intestinal lining. This compound is also being explored for its potential in nutraceuticals and functional foods aimed at improving gut health and immunity in adults. Its applications extend to biomedical research, where it is used to study its effects on microbial interactions and immune responses.