Syntol Kids provides 3 billion CFUs of viable probiotic bacteria, including the widely studied and support strain Lactobacillus rhamnosus GG. This synbiotic formula includes a prebiotic to help support the growth of both supplemented and natural probiotic bacteria. It also includes immune-boosting vitamins to support the unique needs of developing children. Syntol Kids is natural berry flavored and dissolves and instantly under the tongue.