<unk>  is a type of chewing<unk>  that delivers<unk>  to the body. It is used as an aid in<unk>  replacement therapy (NRT), a process for smoking cessation and quitting smokeless tobacco. The<unk>  is delivered to the bloodstream via absorption by the tissues of the mouth. It is available over-the-counter in Europe, the US and elsewhere. The pieces are usually available in individual foil packages and come in various flavors.<unk>  content is usually either 2 or 4 mg of<unk> . Popular brands include Nicotex, Nicorette, Nicogum,<unk> ll and Zonnic. Alternative<unk>  replacement products include the<unk>  patch,<unk>  pastilles/lozenges and the<unk>  inhaler.<unk>  replacement products including<unk>  and transdermal patches are on the World Health Organization's List of Essential Medicines.
Nicotine gum
Nicotine lozenge
Nicotine patch
Nicotine nasal spray
Nicotine polacrilex
Syrup of ipecac
Saw palmetto extract
Herbal cigarette