Been vaping since Nov 2010 I quit smoking on that date.Anyway about 3 months ago I started breaking out in hives every nite.Some kinda allergic reaction.I'm not sure what it is yet but I think may be that the pg has finally built up enuff in my system to finally affect me.So I ordered some ultrapure gonna vape only this for a couple weeks to see if thats it.Also I really like this flavor reg full strength 36 mg wow I'm impressed great taste excellent TH and plumes of vapor!But the best thing is knowing its made in a lab by scientist.Just wanna let you know youv got a new customer and I will be sending more peeps your way.Clean crisp and as worry free as it gets.