An electronic cigarette (or e-cigarette), electronic vaping device, personal vaporizer (PV), or electronic nicotine delivery system (ENDS) is a battery-powered device which simulates tobacco smoking. It generally uses a heating element that vaporizes a liquid solution. Some solutions contain a mixture of nicotine and flavourings, while others release a flavoured vapor without nicotine. Many are designed to simulate smoking implements, such as cigarettes or cigars, in their use and/or appearance, while others are considerably different in appearance.
The benefits and risks of electronic cigarette use are uncertain. They may carry a risk of developing nicotine addiction, and their regulation is the subject of ongoing debate.
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 Nicoderm/Nicorette, Nicogum and Nicotinell.