I have never had a panic attack on Kava, but I've had panic attacks in other situations. I definitely know what a panic attack feels like. This stuff just gets you a bit dizzy and gives you an uncomfortable heart rate increase momentarily. Like I said, after 25 minutes you feel very calm, very relaxed. However, I would not recommend it to anyone who feels like those first 25 mins sound uncomfortable.
I'll tell it to you straight, trevor: drink Malekula Magic by Vanuatu Kava Store. That is absolutely the most soothing Kava you will find. That is a full-blown anxiety killer of a Kava. Trust me. Don't drink Solomon, don't drink Stone, don't drink this... just try out Malekula Magic.