Optibac Babies & Children is a friendly bacteria supplement expertly formulated for babies, toddlers and children to complement their natural gut bacteria. Created by the brand most trusted by UK & Irish parents, it contains three well-researched strains of friendly bacteria: Lactobacillus rhamnosus GG, the most scientifically studied strain of friendly bacteria in the world, Bifidobacterium breve M - 16V, and L. rhamnosus HN001.