Yamin, Bitton and Bates reported about possible toxins in electronic cigarettes in an article E-Cigarettes: A Rapidly Growing Internet Phenomenon in the Journal of Internal Medicine. I only read the abstract, and will add to this post if I read the full article.
Electronic cigarettes aerosolize nicotine and produce a vapor that emulates that of cigarettes and supposedly is safer than even secondhand smoke. They are easily found on Web vendors. But new research suggests that they may contain unexpected toxins and devlier nicotine ineefectively, so they may nto even benefit in weaning oneself out of nicotine addiction. Although many coutnries have banned them, they are not regulated as drug-delivery devices by the United States.