Everyone is different and you really need to look at where you are with your quit. I took Chantix for 5 weeks, had some side effects and got off it (after consulting the pharmacist if I needed to cut back or just go off completely - which I did). I had some additional side effects for about a week or so, but so far so good. You need to make sure you know your triggers, what made you smoke and understand and replace so that you can stay strong in difficult situations. If you think you have all of that covered and have done your homework and educated yourself, you might be fine. Good luck!