BioGaia Probiotics are clinically proven, health fortifying, natural active cultures. The word probiotic means "for life." There is a constant battle going on in your gut between good and bad bacteria. Unfortunately, our modern lifestyle favors the bad ones which may cause diseases. The good bacteria that are natural to the body need reinforcements. BioGaia Probiotic chewable tablets contain Lactobacillus reuteri Protectis, a natural lactobacillus that helps the good guys restore a natural balance in your gut. BioGaia’s L. reuteri is unique in that it is an indigenous probiotic, meaning L. reuteri’s natural habitat is the human body. Scientists feel that BioGaia"s L. reuteri’s indigenous status is a major contributing factor to its health-enhancing effects and exceptional safety record. L. reuteri Protectis has been tested in a number of clinical studies and proven effective as well as safe for both adults and children.