Rich in Acerola Fruit Extract and Prebiotic Fructooligosaccharides GKB Tiger Kids is a delicious proprietary blend of healthy ingredients combining colostrum, tiger milk mushroom (Lignosus Rhinocerus), acerola fruit, prebiotics & probiotic cultures that are great for kids! GKB Tiger Kids comprises Colostrum, Tiger Milk Mushroom, Acerola Fruit Extract, and Probiotic (Bifidobacterium Longum) for good digestion.