I dont think chewing gum are going to help you woth quit smoking. My brother tried once and there were no effect at all. And it is annoying to chew all the time...kinda boring. And it makes you also nerve. My friend used tabs as a treatment and the result was pretty nice if you ask me. He use pills since 4 or 5 weeks and now he smokes only 1 pack of cigarettes every 3 days. So I can recommend you the one he use. I dont remember exactly their name, but the name of the website was kinda long
www.naturalhealthandfitnessproducts.com/ . Hope I was in help guys... and keep going, dont give up.