Unlike some generic brands (like Equate), the company that produces Listerine does not actually produce the Generic brand (there's a statement under the ingredients part on Listerine mouthwash). Therefore, they're not actually the same stuff, whereas the stuff inside Equate skin cleansers for example, is just rebadged Cetaphil product. Hope that makes sense. Anyhoo, that's why I use Listerine since the methods of production for the generic brands are supposedly very different from that of Listerine, resulting in a product with the same ingredient that is yet somehow different from the "real" LIsterine.