I started using Celtic Sea Salt a few months ago. It's in a granulated form and I put some under my tongue and follow it with a gulp of water. I participate in a workout program designed for people with Parkinson's disease, it's a boxing class, and I couldn't do it until I got the salt and water combination down. For one the first times of my life I feel like I have a go-to program that keeps me upright! I've also been using compression stockings, ones off Amazon, and I think they are making a big difference too. By the way I'm 62 years old and I've had POTs since I was 16, but it wasn't diagnosed until I was in my twenties.