Smoking is a leading cause of preventable death and disability worldwide (Knopik et al., 2012; Schroeder, 2013; Thun et al., 2013; Whiteford and Baxter, 2013), and smoking cessation greatly diminishes the increased risk of mortality (Jha et al., 2013). Two pharmacotherapies have been shown to be more effective than others for smoking cessation: combination Nicotine Replacement Therapy (cNRT) and varenicline (Fiore and Baker, 2011; Fiore et al., 2008; Piper et al., 2009).
