Each year about 46% of smokers in the US try to quit, with around 10% of them being successful in the short term1,2. The longer-term success rate for stopping smoking without anything to help is only about 5%3. Smoking cessation medicines increase the success rate and reduce the withdrawal feelings (feeling anxious, being grumpy, being impatient, attention deficit, feeling restless, feeling low or depressed, trouble sleeping, hunger, trouble concentrating, wanting/craving a cigarette). There are plenty of options to help you quit including: Nicotine replacement, counseling, Zyban and now Chantix. As Chantix has only been on the market since May 2006, considerably fewer people will have used it than other drugs to quit smoking.