Wondered if anyone uses or has tried low dose beta blockers for POTS/OI. I have adrenal insufficiency as some may know, and low aldosterone which makes POTS a lot worse. Can't tolerate florinef which is used for POTS/OI - aldosterone replacement. Main probelm is that if I have to be up for too long (which can be just a few minutes), I often get bad POTS symptoms, especially in the day time. So for the last few years I have missed most of my medical appointments which is very counter productive. I wondered if occasional low dose beta blocker just for use on say days I need to get to appointments etc would be useful? I've heard of others with CFS using them too and being able to get out more. Any advice on types/doses or experiences would be appreciated! Not sure if I'd even tolerate though as I'm super drug sensitive and don't tolerate many/most meds, so concerned as I've read they can have bad side effects. However if not likely to cause too much problem at a low dose occasionally, would probably like to try. Thanks, Chris.