3-Fucosyllactose is widely used in the nutrition and health sectors, particularly in infant formula. It mimics the structure of human milk oligosaccharides (HMOs), which are essential for promoting healthy gut microbiota in infants. By supporting the growth of beneficial bacteria, it aids in improving digestion and enhancing immune function. Additionally, it is being explored for its potential in dietary supplements for adults to support gut health and overall well-being. Its role in reducing the risk of infections and inflammation also makes it a valuable component in functional foods and medical nutrition products.