Effects of Electronic Cigarettes on Nicotine Concentrations

This study will examine whether nicotine levels increase with electronic cigarettes. It will also examine whether electronic cigarettes alter lung function tests. The study will obtain preliminary data on the medical effects of electronic cigarettes, with two different nicotine flavors, tobacco and tobacco with menthol, which are available for over the counter purchase. The electronic cigarettes and juice used in this study is available for purchase through the internet. An investigational new drug application (IND) is not needed for this study.