keanburke

MG = milligram -- as in how many milligrams of nicotine is in the juice

PG = propylene glycol -- this carries the flavor, gives more throat hit, thins juice

VG = vegetable glycerine -- this gives more vapor, thicker juice, smoother throat hit, slightly sweeter (more of this and it gunks up coils faster)

VC = not a clue what this is. Sorry!