I'm the queen of "drink lots of water." But no matter how much I drink, I am always thirsty & have dry mouth. I only take 50mg of Nortriptyline(Pamelor) a day, which is one of the tricyclics with the lowest incidence of dry mucous membranes. I've gone thru 2 gallons of water in the past 24 hours. (Don't get between me & the restroom) At the same time, I've retained water badly since I was at least 5. Never worn knee socks because of the giant indentations from the elastic. Same thing happens with little crew socks or anklets if they have elastic. And its itchy. I have bright pink feet and mild Raynaud's, but I'm not diabetic, no gout, etc. Help, I'm still thirsty & out of water!