An e-cigarette is a device that uses electricity from a small battery to vaporize a tobacco-containing solution, producing a vapor that is inhaled. The vapor includes nicotine, the addictive chemical found in other tobacco products, and the e-cigarette is designed to look like a cigarette. While e-cigarette manufacturers claim that their products are safe, they are not FDA-approved and in many cases they may not be used where cigarette smoking is banned, in particular on commercial flights.
ASH has called for e-cigarettes to be treated like other lit tobacco products until there is firm scientific evidence that they are not harmful. The burden of proving their safety should be placed on the manufacturers. And until the FDA says otherwise, they should not be marketed as cessation products.