Hi
I quit smoking three years ago after reading big time on the subject.
To begin with I would say that anyone saying they have the one and only method to quit is either advertising or out of their mind. Addiction is a complex phenomenon and individuals are not all the same. One has to show some will indeed but a little friendship, a little medication (nicotine), a little psychology, a little self-confidence, and the capacity to learn from failures can be required too...
Because of side effects I wouldn't use any other medication than nicotine. So-called vaccines can be very harmful to bo