http://flavorwest.com/index.php/caffeine/e-caffeine.html. has any one tried this? I have read mixed statements about this topic one is that its only metabolized when injested others saying "Because caffeine and nicotine both have "polar" bonds and PG is a polar solvent, it creates a solution. This basically means that you vaporize the PG, and it transports both chemicals straight to the pulmonary blood barrier.".. I would love to give this a shot but that's 20$ (after shipping) out of my next purchase cycle for some thing that I'm questioning. If it works I thit it may be worth it... To me