It is beneficial to make sure the nicotine liquid you buy is made of quality ingredients and under strictly controlled conditions. If you buy the cheapest e-liquid, you will get the cheapest e-liquid. Most reputable nicotine liquid suppliers will explain what is in their nicotine liquid and what conditions their e-juice is mixed under.
The rest of the story is that none of these studies examined quit rates among smokers who were trying to quit using e-cigarettes. None of these studies were in fact designed to examine the role of e-cigarettes in smoking cessation in the first place.
Make no mistake, war is coming to the E-Cig industry.
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