Chantix
"After 19 years of smoking at least a pack a day I quit using Chantix.  The first week was very difficult, nicotine withdrawals and constantly finding myself reaching for a pack that wasn't there anymore. I did the full 3 month course.  I was really worried that I would fall off the wagon as soon as I quit taking the pills, but it didn't happen.  I had relearned new habits in those 3 months.  

The main side effects were vivid dreams.  I've had clinical depression in my past and was not affected with it at all.  I highly suggest taking Vitamin D too. It's now been over 3 years and I'm still smoke free.  It's a completely different life being a non-smoker!"