The last decade is marked by a number of studies regarding the conception of an antinicotine vaccine. There are research studies waiting to be done (Switzerland, USA, Sweden). The principle is represented by the fact that nicotine has a small molecule which can cross the blood-brain barrier resulting in psychic effects and dependence. Vaccination against nicotine produces in the blood an amount of antibodies that prevent the nicotine from generating the feeling of pleasure when the person tries to smoke again. The research studies are advanced and the specialists are hoping to introduce the vaccine against nicotine on the market at the beginning of 2010.