Listerine is a brand name for antiseptic mouthwash. Its original formula has notoriously strong flavor, although variations have been released that are marketed as tasting milder. The product is marketed under the slogan "Kills germs that cause bad breath". It was named after Joseph Lister who promoted the idea of sterile surgery by sterilizing instruments. Listerine is one of the most popular mouthwashes sold in the United States. Originally marketed by the Lambert Pharmacal Company (which lat… (More on Listerine)