atrial fibrillation
"I get mild bouts of atrial fibrillation every couple of months and I also have problems with my body producing too much adrenaline for no reason which the cardiologist thinks may be causing my atrial fibrillation.  He has put me on 40mg - 80mg (yes small dose) to be taken when I either have noticeable heart problems or adrenaline issues as sotalol is a beta blocker.  I only take a dose once or twice a month and it seems to work within about 30 minutes. I have no negative effects from it and it fixes both my atrial fibrillation and provides an immediate calming effect like my adrenaline levels have dropped. Much better than anti-anxiety medicines that I was originally given."