A vapor-producing electronic cigarette is a type of electronic cigarette that uses a silicon-electronic alloy (SiE) to produce a high-voltage electric current that delivers nicotine.
The battery is a thin piece of plastic, typically about the size of a cigarette pack, with a hole through the center to allow a vapor to escape.
It can be used to vaporize tobacco or other combustible products such as food or drink.
E-cigarettes also are designed to mimic smoking by providing nicotine and other ingredients.
E cigarettes are the second most popular tobacco product, after cigarettes, according to a survey released by the nonprofit Campaign for Tobacco-Free Kids last year.
The U.S. Department of Health and Human Services estimates that as of March 2018, about 14 million Americans use e-cigarettes, a number that has grown by nearly two-thirds since 2014.
About 2.6 million Americans currently have a prescription for nicotine replacement therapy, and another 3.3 million people are taking the drug.
E vapor cigarettes are also marketed to smokers, though the FDA has not approved nicotine replacement treatments for them.
In February, a federal appeals court overturned a federal ban on electronic cigarettes and other nicotine delivery devices that the Trump administration had imposed in the wake of the deadly 2014 Virginia Tech shooting.
The ban was challenged by tobacco companies and by groups such as the American Cancer Society, which argued it would hinder innovation in tobacco control.
“Vaping is one of the great discoveries of the 20th century, and the Trump Administration is making it harder for the American public to choose safer alternatives to smoking,” David Buell, director of the Campaign for Better Nicotine, said in a statement after the ruling.
“They’re going to be fighting tooth and nail to keep their draconian ban on e-cigarette use in place, and now that the court has sided with them, the courts will decide if this ban will survive a Trump Administration challenge.”
The FDA did not immediately respond to a request for comment.