Varenicline
"I'm on day 9 of Champix and my quit date is in 2 more days. Already feeling much less of an urge to smoke and when I do, enjoying it less. Side effects are a real thing. Definitely vivid odd dreams, and nausea and spaciness and early exhaustion. I'd say its still worth it though.. anything is worth killing your cig addiction. Looking forward to ending these meds though. Its pretty uncomfortable. Hard to focus at work."