I just thought that I would share this link for those of you with PG sensitivities. There are only a few of these that even contain trace amounts of Ethyl Alcohol and those are listed as having it. From what I am told, it only takes about 1 drop to 30 ml of liquid to get good flavor with these. I have not tried them myself because they are very pricey and I have no problem with PG based flavors. If you are not able to tolerate VG, it may be a good option for you. Flavors