Smokeless tobacco is a tobacco product that is used in ways other than smoking. Their use includes chewing, sniffing, or placing the product between gum and the cheek or lip. Smokeless tobacco products are produced in various forms, such as chewing tobacco, snuff, snus, and dissolvable tobacco products. Smokeless tobacco products typically contain over 3000 constituents. All smokeless tobacco products contain nicotine and are highly addictive because of this. Quitting smokeless tobacco use is as difficult as quitting normal smoking.