Most E Cigarette Users Are Current And Ex Smokers, Not Newbies WUNC News The Food and Drug Administration (FDA) has only authorized 4 vape brands to be "lawfully sold in the US." FYI, of those 4 brands, there are a total of 39 vapes (a Nicotine use among young people is evolving. New research shows more youth are using multiple nicotine products at the same timemost commonly cigarettes and e cigarettes, with a growing rise in combining vapes Vaping: The Small Habit That Hits Harder Than You Think Maryland Physicians Care E Cigarettes and Cardiovascular Health: The Risks of Vaping The Cardiology Advisor Is the Nicotine in E Cigarettes Harmful for Your Health? Scientific American