I’ve had anxiety for a while and I’ve experienced pretty bad panic attacks in my life time, but in the past 3 days i had the 2 worst attacks ever that literally felt like I was about to die.  They’ve been sparked from essentially nothing. The only Thing I can think of that’s changed is that I’ve been drinking this monster energy drink recently. But they usually start hours after I’ve drink them. Could the caffeine be causing these intense attacks? Please help.