Nicotine replacement therapy is the use of various forms of nicotine delivery methods intended to replace nicotine obtained from smoking or other tobacco usage. These products are intended for use in smoking cessation efforts to help deal with withdrawal symptoms and cravings caused by the loss of nicotine from cigarettes.

Several forms of Nicotine replacement therapy have been marketed, including the nicotine patch, inhaler, nasal spray, gum, sublingual tablet, and lozenge.

Nicotine replacement therapy is thought to be useful and beneficial for tobacco users who want to quit their addiction and is for most people perfectly safe. Cigarettes on the other hand cause the early deaths of about 5 million people each year. These people are not killed by the nicotine in the cigarette, but by other constituents of tobacco smoke such as Carbon Monoxide and tars. It is the nicotine that keeps the smoker addicted. Cigarettes can be viewed as a "dirty" and dangerous method of delivering nicotine, while Nicotine replacement therapy is a "clean" and safe method.

Nicotine replacement therapy delivers nicotine to the smokers brain in a much slower way than cigarettes do. It helps to damp down the urges to smoke that most smokers have in the early days and weeks after quitting, rather than remove them totally. It gives the smoker the chance to break smoking cues in their daily lives, and might provide a more comfortable exit from the smoking habit. Nicotine replacement therapy however is best used with some form of support, ideally from someone who knows something about smoking cessation.

A small number of people who use Nicotine replacement therapy, especially Nasal Spray and Nicotine Gum, will go on to use it on a longer term basis. These are usually highly nicotine dependent smokers who would not have been able to quit without the help of such medication. There is currently no evidence that such long term usage is harmful to health, especially when compared to smoking.

Findings from a recent Cochrane review of controlled trials testing Nicotine replacement therapy products indicated that smokers using Nicotine replacement therapy were 1.5 to 2 times more likely to be abstinent from smoking at follow-up than those in the placebo or control treatment condition.

Types:

* Nicotine patch
* Nicotine gum
* Nicotine lozenge
* Nicotine inhaler
* Nicotine spray
* Nicotine sublingual tablet

Source: wikipedia GFDL