Hi! I’m so sorry you are on this journey, but I hope you find answers here, in the videos and book. We are not all the same, and there is no set protocol (or even doses) of medication suitable for us all. Having said that, Zantac Zyrtec (double doses) usually help most of us. If high intracranial pressure is a problem, your doctor will want a “regular” brain MRI (no need to look at veins), lying down is fine. Doses of Diamox are tricky. This video discusses them: https://youtu.be/xd1QoOhJTxw If all else fails, we see patients full time at POTSCare.com now. Gentle hugs,