Both my DH and MIL used Zyban to stop smoking, with great success. My MIL had been smoking for over 20 years, and since taking Zyban, has not smoked for almost 2 years now. DH had only been smoking for about 5 years, but has been smoke free for 18 months. They reported no side effects, no cravings, nothing.
Good luck, and congrats on deciding to go smoke free!!!