Authentic flavour', which provides the trusted, original formulation to kill the germs that cause tooth decay, gum problems and bad breath. Just 30 seconds of rinsing, twice a day. ?That’s all it takes when you use Listerine Original Antiseptic Mouthwash. Sure, it's a little intense. But what else would you expect from the original bold? You’ll get 24-hour protection with clinically proven health benefits. It has the power to kill germs that lead to bad breath, plaque and gum disease. Listerine Original has 21% greater gingivitis reduction than merely brushing and flossing alone. It was shown in a clinical study to reduce 52% more plaque than brushing and flossing alone.