smoking cessation
"First off everybody will not experience the same side effects from using Chantix. 

As for me I'm glad I decided to take it. I noticed the medication started working about day 8. Cigarettes made me slightly nauseated. They slowly became less satisfying and desirable. The urges by then to smoke were minimal and withdrawals were none from the start. I did have some nausea in the beginning after taking the pill that went away after a few minutes. Other than that no noticeable side effects. I'm just now starting week 4. The urge to smoke now is completely gone. I don't feel like I ever want to smoke again."