Mommy's Bliss Probiotic Drops + Vitamin D safely and naturally promote digestive health and support immune function in babies, and include vitamin D for healthy bone growth and development. It also helps with occasional gas, diarrhea and constipation. Our probiotic drops contain the live culture Lactobacillus rhamnosus GG, the most widely studied probiotic in the world with over 800 scientific publications attesting to the safety and healthfulness of these beneficial bacteria. They also provide the daily amount of vitamin D as recommended by the American Academy of Pediatrics.