Varenicline
"I have been a smoker for 30  years. I decided when I hit 50 it was time to quit! I pretty much didn't change my habit the first week. Gradually the smoking got lighter to where 
I would have a couple on Saturday, usually with a glass of wine.  Then about a month and a half later it was a big yuck! The smell and taste were disgusting. I still had one smoke a week and now nothing. I have been cigarette free for one month now. I am on my last week of a 3 month program and I feel I am now a "recovering" smoker. I still sometimes have an urge, but it passes quickly. There really were no serious side effects. I did experience some nausea. To add to this, I WAS a heavy wine drinker before I started taking this medication. Now I am a light drinker."