Smoking cessation clinics usually offer intensive support and involve multiple sessions. They may include a considerable variety of treatment components and tend to produce good long-term outcomes. However, they typically require a very significant investment in time and energy. Commonly offered nonprofit programs include those of the Seventh Day Adventist's Five Day Plan, the American Lung Association's Freedom From Smoking clinics, and the American Cancer Society's Fresh Start program. Programs that require a greater number of sessions typically result in higher quit rates than those with fewer sessions.
Commercial programs are also available.
SmokEnders, Smoke Stoppers, Smokeless, and Schick are among the most common smoking cessation clinics. Commercial programs are often substantially more expensive than the nonprofit programs and there is little evidence to demonstrate that the commercial programs are more effective than those of nonprofit organizations. Commercial vendors indicate correctly that, for many smokers, a substantial fee may represent their high level of commitment and serve as an incentive for quitting. Both nicotine gum and transdermal nicotine patches deliver doses of nicotine that provide relief from withdrawal symptoms while the smoker works on breaking his or her smoking habit. Over time, the dose of nicotine is gradually reduced.