I took a phenphedrine at 2pm and then took 2 excedrine migraine pills around 5pm. Around 6 I started feeling nauseous, dizzy, shaking, and had a panic attack. I have taken excedrine pretty much every day for a long time and I know its bad and after today I plan on discontinuing. After looking up excedrin side effects my symptoms match, especially after taking on an empty stomach, though I have before and never reacted like this which leads me to my question- Was mixing the phen and excedrin bad? They both contain caffeine so I think my body is just reacting to that but being the paranoid person that I am and its now 130 am and I still feel horrible, am I going to be okay? Should I just sleep it off or what?