Sona BabyBiotic (8.5ml). The gut microbiota with various bacteria, among others bifidobacteria, is established in early infancy. The microbiota plays an important role in the development and function of the gastrointestinal and immune system. Sona Babybiotic is a food supplement for infants from birth containing 5 billion Bifidobacterium (BB-12®) in each daily dose.