Listerine mouthwash gives you all healthy mouth benefits. Adding a 30-second rinse with Listerine antiseptic mouthwash to your morning and night time routine is all it takes to get 24 hour protection against plaque. Listerine is a brand of antiseptic mouthwash. Their original formula has a notoriously strong flavour, although variations have been released that are marketed as tasting milder. Their product is marketed under the slogan "Kills germs that cause bad breath". The company is named after Joseph Lister, the one who promoted the idea of sterile surgery by sterilizing instruments. Originally marketed by the Lambert Pharmacal Company, the company is currently manufactured and distributed by Johnson and Johnson.