Varenicline
"I read the reviews on Champix and thought maybe my experience maybe helpful to someone. I stopped smoking for 2 months cold turkey and experienced nearly every side effect listed by people as being caused by Champix.  Could these be possibly caused by nicotine withdrawal ?? And not the drug?? Cold turkey, l suffered anxiety, low mood, felt like time was standing still, difficulty concentrating, headaches, irritability, insomnia, vivid dreams that actually seemed real, restless legs, gastric disturbances and tingling of my hands and feet and cravings. I found lots of water and making myself exercise helped. Starting Champix today and nicotine patches as recommended by my Dr."