I took a preworkout called Mr. Hyde which was the biggest mistake of my life. I went to the emergency room with a rapid heart rate and high blood pressure. I have since been suffering from what maybe panic attacks and anxiety that comes and goes throughout the day and have been in and out of 4 ERs cause I don't know how to handle this. They all say I'm fine and haven't had a heart attack. I've been given klonipin from my doc. Told to take .5 mg as need. Still get these attacks out of the blue and rapid heart rate sometimes in the middle of the night with tightness of chest. Just wondering if there is any advice out there.