BIOGAIA Protectis Baby Drops (5ml) contain Lactobacillus reuteri Protectis, a probiotic strain that helps support digestive health and balance the gut flora in infants. These drops are commonly used to alleviate colic, constipation, and other digestive issues in babies. They help promote a healthy gut microbiome, improving digestion and supporting the immune system. The drops are typically used as directed by a pediatrician.