The main study finding was as follows: "The assessment of lung function demonstrated that neither a brief session of active e-cigarette smoking nor a 1 hour passive e-cigarette smoking session significantly interfered with normal lung function. On the other hand, acute active and passive tobacco cigarette smoking undermined lung function, as repeatedly shown in previous studies."

Let’s break down the base shall we Nicotine, VG (Vegetable Glycerin), and PG (Propylene Glycol) are found in every bottle of E-Juice. This base makes up 85% to 95% of the bottle of E-Juice that you are paying for, and it is virtually identical in every bottle. There is no such thing as “premium” PG or “premium” VG; it is all one in the same. The other percentage is just the flavoring, and this is where the term premium could come into play. There are dozens of different flavoring manufacturers out there. Some in the USA others overseas such as Italy and even China (not good) and all with a different price point. Generally speaking, the imported flavorings (not the Chinese ones) do cost more than the flavorings from stateside and from my experience no two flavoring companies are really the same. The Flavor Apprentice is a very popular choice when it comes to E-Juice making, mostly because it is dirt cheap to order in bulk compared to companies like Lorann or even Capella; both of which have a higher price tag. In short there is such a thing as premium flavoring, but no E-Juice vendor would be willing to reveal the secrets of their trade and inform you what company they’re ordering from even if they are calling it “premium” E-Juice.

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