How effective are the different forms of nicotine replacement therapy (NRT), i.e. gum, transdermal patch, nasal spray, inhaler, oral spray, lozenge and sublingual tablet, for smoking cessation?
These conclusions apply to smokers who are motivated to quit and who have high levels of nicotine dependence. There is little evidence about the role of NRT for individuals smoking fewer than 10 to 15 cigarettes a day.
The aim of NRT is to temporarily replace much of the nicotine from cigarettes to reduce motivation to smoke and nicotine withdrawal symptoms, thus easing the transition from cigarette smoking to complete abstinence.