I think taking a beta blocker would possibly help. I think the adrenaline is the 3rd party that's causing all of the havoc. Your pancreas is actually having to do extra work to get your sugars back up from when the adrenaline smashed them in the ground. My insulin levels were normal, so there was another element that was causing the critically low levels, hence adrenalines role. In a normal person adrenaline is there to get things moving quickly when systems have dropped too low. With our bodies, the adrenanline kicks in each time we eat which disrupts the entire system, making the pancreas work extra to get out sugars back up. Each endocrinologist told me that my pancreas was working correctly on each of my glucose tolerance tests. My blood sugar eventually regulated within a couple of hours, though I felt like I had been run over by a bus. Having your insulin levels testing at the same intervals that your glucose levels are tested is a must. I've also read where the patient's Adrenaline and Noradrenaline levels were tested at the end of the test. It appears that these levels are high in POTS patients with Reactive Hypoglycemia. They wanted to test my fasting levels (glucose and insulin) to be sure I didn't have an insulinoma, basically a tumor producing insulin, resulting in low blood sugar levels. All my fasting levels were normal, so that was ruled out. The system goes chaotic only when I eat sugar and it's worse with fruit. They also did a CT scan of my pituitary gland to make sure there was no tumor there. One wanted to throw the Insulin Resistance label on me, which made absolutely no sense at all. I took Byetta, and Metformin, which made me so completely weak and lethargic. Was clear that this was not the correct diagnosis. Hope this helps.