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How well does the gum work?

People who use the nicotine gum are about one and a half times more likely to quit and stay stopped. Nicotine gum (4 mg) also appears to delay the weight gain which may occur after quitting, but doesn't have a lasting effect beyond its use.

When using the gum you take in less nicotine at a much slower rate than when smoking. This makes it less addictive and easier to stop using than cigarettes. However, it will be several minutes slower at easing cravings than a cigarette. Over a day, gum users typically absorb about one-third (2mg gum) or two-thirds (4mg gum) of the dose of nicotine that they would get from smoking a pack of cigarettes per day.

Among smokers more addicted to nicotine (those who smoke more than 20 cigarettes per day and smoke within 30 minutes of waking), 4mg gum works better than 2mg gum.