I used a form of Zyban but I cant remember the name.
TIPS; Change your habits for as long as it takes to be able to resist temptation such as if you like to go to a bar and have a beer, DONT, its one of the worst things to do cause you will have a beer and break down for the smokes in a depressingly short time.
THINK about the times when you NORMALY have a smoke without thinking of it such as after a meal, dont sit there, get up and MOVE, do the dishes ANYTHING to break the normal next act of smoking a cigarette. If you smoke in the house for example while surfing the net, if you desire a smoke shut off the computer and do something different to take your mind off the normal co-habit of having a smoke. Its like the way pancackes and syrup go together. If you want to give up syrup stop having the pancakes that will tempt you to have the syrup.
Good luck, I quit a bunch of times for up to a year at a time but when I quit for good 7 years ago it was because I TRUELY WANTED to quit. No just kind of wanted to cause I knew I should or tried to because my wife wanted me to. If you REALLY dont want to quit your wasting your time.
I cant emphesize enough that for the next few weeks at least when you really want a smoke stop whatever it is your doing and do something that you usually cant or dont smoke. Get up and leave the room, leave the house, stop working on whatever it is your doing, take a shower, take a walk, REMOVE YOURSELF FROM THE ENVIRONMENT THAT ACTS AS A TRIGGER TO SMOKE. Do something that will make you concentrate or distract you.
Good luck and the first few months are the hardest. For 4 or 5 years I would get a craving out of the blue but usually just for a few moments and it get easier to ignore but there are STILL times I want a smoke. I glad I quit, I feel so much better and you never realize how bad you stink untill you quit for a few months.