Help prevent cavities and freshen breath with Listerine Strong Teeth Mint Shield Anticavity Fluoride Mouthwash. This strengthening mouthwash helps strengthen your teeth while fighting dental cavities and freshening bad breath. Formulated with sodium fluoride and acidulated phosphate, this oral hygiene mouth rinse strengthens teeth 50% better than brushing alone.* And, the refreshing mint shield flavor is designed to leave your whole mouth feeling fresh and clean. After brushing, rinse with this anticavity mouthwash twice daily, both morning and night, as part of your oral care routine. *in a lab study *in a lab study