The difference between a brand name Amoxyl, Polymox, Trimox, Wymox and a generic Amoxyl, Polymox, Trimox, Wymox (Amoxycillin) one is in the name, shape and in the price. A generic Amoxyl, Polymox, Trimox, Wymox is usually called by the name of the active ingredient - Amoxycillin while a manufacturer uses a brand name. However, a manufacturer cannot possess a patent for a certain chemical agent, this is why manufacturers of generic Amoxyl, Polymox, Trimox, Wymox can legally produce the so-called "generics". They are the same chemically and since the active ingredient is identical, they have the same medical effect. Thus buying a generic Amoxyl, Polymox, Trimox, Wymox one pays less but gets the very same result. Unlike generic Amoxyl, Polymox, Trimox, Wymox, a large part of the costs incurred by original manufacturers of brand name Amoxyl, Polymox, Trimox, Wymox are for research and development and advertising. The expense of obtaining FDA approval alone in the U.S. is enormous. Manufacturers of generic Amoxyl, Polymox, Trimox, Wymox do not have to absorb or recover these costs. Consequently, significant cost savings can be passed along to you.