This is the equivalent of a cigarette company refuting the required warnings that are made on a cigarette package. The cigarette companies are free to fight the cigarette warning labels as they are being considered, but once a federal body requires those warnings, the companies must not act to undermine the required warnings. In this case, Pfizer's actions are more grievous than those of a cigarette company undermining a package warning because the black box warnings are required by a federal regulatory safety agency, rather than by a Congressional act. More specifically, the black box warnings are an official part of the formal approval of the marketing and sale of the drug. The company may not sell the drug without the warning. By publicly undermining and refuting the warning, the company is essentially violating the terms of the drug's approval.

Late last month, the University of Michigan released the results of the 2013 , a national study of youths in grades 8, 10, and 12. Despite the CDC's sirens about how e-cigarettes are leading to an increase in youth smoking, the data show that youth smoking rates reached a record low in 2013.

If the voltage of the battery is inconsistent, the heating element fires at a cold temp and then increases to a hot temperature and the vapor will also be inconsistent. Not usually a problem, unless your e-liquid only tastes good at one temperature.

Furthermore, caffeine has a lower boiling point than nicotine does. As your electronic cigarette vaporizes the E-Juice, the caffeine could easily have dissipated, especially due to the lower concentrationsin the e-liquidI was using.

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