BioGaia® Gastrus® is a high quality probiotic food supplement. Each chewable Gastrus® tablet contains two patented L. reuteri strains that work synergistically to support and help maintain healthy gut flora balance. Dual active probiotic with L.reuteri. Live bacterial cultures designed to support the digestive system. Contains one of the world's most researched probiotic strain. L. reuteri Gastrus®** (L. reuteri DSM 17938 and ATCC PTA 6475) – exclusive to BioGaia® Supports your natural gut flora. Delicious mandarin flavour - one tablet per day