My wife was diagnosed with POTS around 2.5 years ago. She was perfectly healthy and one day showed up to work, couldn't bare to stand to do her job due to fatigue and a pounding heart, came home, and never went back. After bouncing between cardiologists, we were told she has POTS. She has been taking Toprol XL with minimal success. It allows her to mostly function around the house, but she hasn't left the house more than a handful of times in the past couple of years, other than going to see doctors. She has heat intolerance and we live in Florida... you can see how that's a problem. She tried Flourinef, Midodrine, and a couple of others (briefly) but none seemed to help at all. We were kind of at a loss as to what to do next... and it stayed that way for a long time. A few days ago, she was sitting on the couch and suddenly her heart was racing more than usual and she said she needed to go to the emergency room. When we got there, her heart rate was at least 150. After her heart somewhat calmed down in the ER, they admitted her and she's been in a hospital room for the last few days. The cardiologist here wants to try new things in an attempt to reduce her POTS symptoms so she can actually get out of the house. The good news is that this cardiologist has worked with an EP who has treated POTS patients with some success in the past. They put her on Mestinon and Flourinef for the last couple of days which gave her horrible side effects (high heart rate up to 180, terrible stomach problems, etc). Now they're thinking that wasn't doing anything useful so they're taking her off of that as they just noticed her cortisol level is low. They said it's at 4. They're going to inject her with cortisol to see if her body is able to process it properly (I don't 100% understand what they're doing). The cardiologist said that the low cortisol may be what's causing some of her POTS symptoms and that correcting it may help. They also said her leg muscles are somewhat weak and wearing waist-high compression stockings along with doing leg exercises would help a bunch. So my questions for all of you are: 1. Have any of you had low cortisol levels and has correcting that helped with POTS symptoms? 2. Has wearing compression stockings and doing leg exercises helped any of you? 3. What would you recommend that I ask the doctor(s) while we're here in the hospital? We want to make the most out of this extended visit. 4. What other tests should we have them run while she's here? Thanks!