BioGaia ProTectis Probiotic chewable tablets is a dietary supplement containing 100 million live active Lactobacillus reuteri Protectis bacteria (BioGaia's own patented probiotic bacteria), and has been clinically tested and proven effective for both adults and children.L. reuteri are "good bacteria" that naturally occur within the body in the digestive, urinary and genital systems. BioGaia ProTectis relieves and prevents diarrhea, improves immune systems, and certain skin conditions.