I'm not sure what is going on, but every juice I use gives me a headache, even stuff I've been using all along! I had ordered some new juice and when it got here I gave it a try and immediately got a headache, I checked out the bottles and found they sent me a lower nic then I ordered, I figured that was the issue and went back to the juice I had been using but I still having headaches. I've had a least 4 days of stabby-I-want-to-punch headaches. Whats up with that?