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Nicotine gum is a type of chewing gum that delivers nicotine to the body. It is used as an aid in nicotine replacement therapy (NRT), a process for smoking cessation and quitting smokeless tobacco. The nicotine is delivered to the bloodstream via absorption by the tissues of the mouth. It is currently available over-the-counter in Europe, the US and elsewhere. The pieces are usually available in individual foil packages and come in various flavors. Nicotine content is usually either 2 or 4 mg of nicotine, roughly the nicotine content of 1 or 2 cigarettes, with the appropriate content and dosage depending on the smoking habits of the user. Popular brands include Nicotex, Nicoderm/Nicorette, Nicogum and Nicotinell. Alternative nicotine replacement products include the nicotine patch, nicotine pastilles/lozenges and the nicotine inhaler. ==Medical uses== Gum should not be used less than 15 minutes after eating or drinking as doing so will reduce absorption. Users are directed to chew the gum until it softens and produces a tingling sensation or "peppery" taste. The gum is then "parked," or tucked, in between the cheek and gums. When the tingling ends the gum is chewed again until it returns, and is then re-parked in a new location. These steps are repeated until the gum is depleted of nicotine (about 30 minutes) or the craving dissipates. Dosage suggested by the Dental-professional.com website is: weeks 1-6: 1 piece every 1 to 2 hours; weeks 7-9: 1 piece every 2 to 4 hours; weeks 10-12: 1 piece every 4–8 hours; no more than 24 pieces per day. Do not use for longer than 12 weeks. Pregnant women should neither smoke nor use NRT.〔 Light smokers should use the 2 mg and heavy smokers the 4 mg; size of gum is the same for both doses. When used properly, about 3 mg is absorbed into the bloodstream from the 4 mg gum, and 1 mg from the 2 mg gum.〔(dental-professional.com Frequently Asked Questions. ) Caution: this is a commercial website which sells the gum, in addition to providing useful factual information.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「nicotine gum」の詳細全文を読む スポンサード リンク
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