Udo's Choice Infant’s Blend Microbiotics provide an easy-to-consume powdered blend of ‘friendly’ bacteria (probiotic), specifically selected for children under 5 years old, to support the immune system functionality & encourage proper digestion. Microbiotics are the beneficial lacto & bifido bacteria that occur throughout the digestive tract & are essential in replenishing healthy gut flora, which helps to reduce gas, bloating & constipation. Udo’s Choice Infant’s Blend Contains: 6 child-specific bacterial strains designed to reflect healthy childhood microflora 3 billion cells per gram, including: Lactobacillus casei (HA-108): 32%, Lactobacillus rhamnosus (HA-111): 26%, Lactobacillus acidophilus (HA-122): 21%, Bifidobacterium infantis (HA-116): 11%, Bifidobacterium bifidum (HA-13): 5%, Bifidobacterium breve (HA-129): 5%. Suitable for vegetarians. Gluten free.