Under the FDA’s orders, the manufacturers — JD Nova Group LLC, Great American Vapes and VaporSalon — must pull 55,000 existing or planned flavored products from the market or risk enforcement.

A growing group of e-cigarette purveyors are defying the FDA, which contends the nascent nicotine products are drug devices that require pre-market approval and may pose their own health risks.

NEW YORK – The e-cigarette market is suddenly getting more crowded. Makers of the "vaping" devices launched a flood of new products in the United States ahead of new federal regulations, taking ...

Booming e-cigarette market in need of greater oversight, ... 2014. A clerk displays a blutane lighter, left, and a blu e-cigarette at a shop in Brookline, Mass. (Steven Senne/AP) By Brady Dennis.