I use the TFA Vanilla Bean Ice Cream which carries a similiar warning and I use it at 10% as a single flavor and at 3-5% with other flavors. I use it because no other Vanilla or combination I have tried comes close to be as good IMO.
While speaking of the warning remember that all flavorings with Custard and Buttery notes really should not be used for
vaping and that the Air in Calif. is known to Cause Birth Defects and Cancers.
Bottom line is non of the ingredients used in
vaping have been proven safe or at what levels for what time period. FDA / EPA ( Big Brother) requires testing which takes years and cost millions of dollars before a drug , medical device automobile can be marketed and yet they sytill have recalls ,ckllass action law suits and yes related deaths.
I for one get very weary of being protected from myself. Prove to me anything we vape is more harmful that Coffen Nails!
Added:
I do feel it is very good that TFA does list these warnings and it would be great if other vendors would do the same. How many who vape premade
juice have any idea of the source of the flavoring used?