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 E Cigarette Brands Are Skirting the Rules About Health Warning Labels on Instagram, Study Finds The Brink Boston University 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 Why e cigarettes are dangerous UPMC MyHealth Matters