The Listerine Teeth and Gum Defence is a powerful mouthwash that helps to prevent and treat gum disease, as well as freshen breath and fight plaque. The mouthwash features a clinically proven formula that helps to kill germs that cause gum disease and other oral health problems. With regular use, this mouthwash can help to keep your teeth and gums healthy and strong. Keep your mouth healthy with Listerine Teeth and Gum Defence.