LISTERINE® Gum Therapy antiseptic mouthwash. Formulated with anti-plaque & anti-gingivitis essential oils, this ADA accepted mouthwash helps kill harmful bacteria in your mouth that can lead to gingivitis or gum disease. When used 2x a day, LISTERINE® Gum Therapy Antiseptic Mouthwash promotes gum health by treating red, irritated, and bleeding gums, while also freshening your breath.