COV & Vaperite seem to use the same flavoring provider with many of there juices, though they make different juices both have the organic line. I use all VG mixes or only VG with a PG flavoring sometimes. PG and certain ingredients in some juices tend to give me side effects. Those side effects seem to be itchiness of the skin, headaches, swollen feet, I know that's a crazy one but its a fact, I also have had my heart checked and a full check up and I have the heart of a 20yr old and I'm in very good shape, no Dr could figure out the swollen feet but it seems to happen with some of the sweeter vapes and I cant pin it down it's crazy, I am also type 2 diabetic and some of the sweeter vapes raise my blood sugar levels at times. So I tend to stick to all VG or dam near all VG, I find it's just a better vape too ( for me ) so that's my deal and the whole organic thing has helped it seems but it's not 100% and I wished I could find exactly what it is that gives me these side effects like you I just cant nail it down.