Viridian synbiotic children39s powder is an expert formulation comprising good gut bacteria commonly known as probiotics with added prebiotics viridian synbiotic children39s powder is a blend of four strains of the good gut bacteria lactobacilli and bifidobacteria that were selected through a unique process designed to identify the most clinically researched probiotic strains the unique prebiotic fs2 60 offers full spectrum prebiotic oligosaccharide and plant derived inulin