Keep in mind pure caffeine is very very bitter. I once tried caffeine infused water before, and it was quite nasty, so having a very high concentration of caffeine would definitely ruin the flavor. So since the bottle of E-Juice I tried didn’t have any bitter notes, I’d say a low concentration was used.

The Rest of the Story

This study confirms that in the UK, despite substantial experimentation with e-cigarettes by youth, this experimentation does not appear to be leading to regular e-cigarette use by a large proportion of youth, and those who are regular users are overwhelmingly youth who are already smokers or who smoked in the past.

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