A search of English-language websites in January revealed 466 brands of e-cigarettes and 7,764 flavoured liquids, a University of California study shows.

“Older brands tend to highlight their advantages over conventional cigarettes while newer brands emphasise consumer choice in multiple flavours and product versatility,” says the study published in Tobacco Control. The research performed at UC San Diego is the first comprehensive study of e-cigarette brands sold on the Internet, the study states.
In the 17 months between a survey done in May-August, 2012, and December-January, 2014, an average 10.5 e-cig brands and 242 flavours per month were introduced, the study shows. “The dynamics of the current e-cigarette market present significant challenges to regulatory policy making,” the study states.