In my humble opinion, I don't think the attack is related to ecigs. I had a few issues on my vaping journey...like not getting out of bed, watching tv continuously & eating more than usual, but after 6-8mo the depression subsided. I checked out all possible health related issues & have not come across panic attacks. Has he suffered panic attacks before vaping or is this new?? If this isn't something new, then I would say it's safe to assume there's absolutely no correlation between vaping & panic attacks. Also, may want to check to make sure the milligrams are around 24mg. Again, in my opinion, anything higher than that, could be dangerous.