Hi @KiminOrlando - thank you so much for your response. My wife was diagnosed in 2010 with Hyperadrenergic POTS (tilt table test with POTS specialist) with high norepinephrine levels. She has been progressively ill for over 10 years, most of that time debilitated with POTS - she was also diagnosed with severe migraines, gastroparesis and Hashimoto's. She also has sensory problems (extreme sensitivity to light, motion, vibrations, noise and smells). No NeuroCardiogenic Syncope. Upon sitting or standing, she feels presyncope but gets enough warning to get down before she faints. She has fainted before when she couldn't make it back in time from the bathroom. In the hospital, in the fall, she had a MRI, EMG, many blood tests - everything was normal (e.g. no indication of MS, Parkinson's). The Mestinon made her feel stoned/out of it (in a bad way) on a very small dose and the Fludrocortisone made her migraines so much worse. She has not tried beta blockers. Her original POTS specialist was good with the diagnosis, but wasn't that helpful with a treatment plan and has since moved away. She is on a long waiting list to see a new one. I hope this helps for now to give a bit more information. I really appreciate all your help!