There was evidence that tobacco companies were carefully controlling the amount of nicotine in cigarettes and so the FDA argued cigarettes were a drug delivery

There was evidence that tobacco companies were carefully controlling the amount of nicotine in cigarettes and so the FDA argued cigarettes were a drug delivery system and should be regulated as such. The FDA openly proposes to regulate e-cigarettes and "certain dissolvables that are not 'smokeless tobacco'" http://www.fda.gov/TobaccoProducts/Labeling/ucm388395.htm http://www.fda.gov/TobaccoProducts/Labeling/ucm388395.htm Curiously the Wikipedia page https://en.wikipedia.org/wiki/Regulation_of_tobacco_by_the_U.S._Food_and_Drug_Administration https://en.wikipedia.org/wiki/Regulation_of_tobacco_by_the_U... makes no mention of the term "drug delivery system".