KernBiotic® offers a very complete formula with fructooligosaccharides (FOS) and 4 strains of lyophilized microorganisms, including some strains of lactobacilli and bifidobacteria naturally present in the body. This is the case of Lactobacillus rhamnosus GG, a strain widely recommended by the guidelines of the Spanish Society of Probiotics and Prebiotics (SEPyP) and the International Scientific Association for Probiotics and Prebiotics (ISAPP). The other three strains are Lactobacillus reuteri LR02, Lactobacillus plantarum LP09, and Bifidobacterium breve BR03. This dietary supplement also contains vitamin B12 and niacin, which help reduce tiredness and fatigue. Vitamin B12 also contributes to the normal function of the immune system.