As everyone has stated above, e-cigarettes and cigarettes are regulated by the FDA. I do think e-cigarettes are different than cigarettes due to lots of people I have come across using them to quit smoking. This is exactly how the FDA feels(https://www.fda.gov/TobaccoProducts/Labeling/ProductsIngredientsComponents/ucm456610.htm). The FDA feels that e-cigarettes are primarily for “therapeutic purposes” so its regulated under the CDER. I believe research should be done to prove that the majority of people are using it for “therapeutic purposes”. If research is provided to show that it is not being used as such then it should be re-evaluated and considered a drug delivery device.