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Champix was developed as the first non-nicotine drug designed for smoking cessation in the United States and will be the first oral smoking cessation aid available in Japan. The currently available smoking cessation aids such as ‘Nicotine Replacement Therapy’ (NRT) relieve withdrawal symptoms associated with smoking cessation by replacing tobacco use through delivering nicotine. In contrast, Champix brings about a smoking cessation effect through a new mechanism of action which works by selectively targeting the α4β2 nicotine receptors in the brain to reduce both craving and withdrawal symptoms and reduce the pleasure associated with smoking... Pfizer's Press Release -