Pounding heart

chiraldude

I have looked through this forum and found people with similar but not exactly the same symptoms.
About a month ago I started having heart palpitations. What I mean by this is that my heartbeats are exceptionally strong. No irregular beats, just constant thumping that I can't ignore. I can deal with this during the day but it often continues through the night making it impossible to get a good nights sleep.
These episodes can last as long as 48hrs but usually 24. Sometimes I can identify a trigger, like a stressful event but often it just starts for no apparent reason.
So far my doctor has given me Xanax and a beta blocker. This has helped me get to sleep a number of times but I know Xanax tolerance builds quickly and that this is a short term fix. The beta blocker only makes my heart rate slower, doing nothing for the beat intensity.
I am understanding that this falls into the category of Anxiety disorder but this is not a panic attack. Once my Adrenalin gets turned on I can't find a way to turn it off. Just have to wait till it shuts down by itself.
I have totally cut out alcohol and caffeine btw.
I need to find a way to break the cycle and shut down the adrenalin. Anyone have something like this and figured out a way to manage it?