HMF Natogen is a unique combination of four strains of proprietary human-sourced probiotics that promotes intestinal health in young children. Lactobacilli and Bifidobacteria are the most commonly used probiotics, and they effectively colonize the intestines. The human intestinal tract contains more than 400 bacterial species, and a healthy bacterial balance is necessary for a healthy gastrointestinal tract. Probiotics promote the presence of beneficial bacteria, and strengthen the epithelial barrier. Probiotics transiently impact the host’s microflora, as once their ingestion ends, they decline in numbers. As the microflora composition in children is relatively unchanged after infancy, it significantly depends on the diet.