Hi there, I can't answer your questions but I can let you know that I've had the same problem. I ended a 10 day fast last monday, for the last 5 days I felt dehydrated, and I'm still feeling dehydrated 4 days later after slowly transitioning back to food. The back of my throat is dry and even gets sore, and no matter how much I drink I can't get over it. I'd love to hear any feedback about this.