I hope this helps some of you. Because my water-absorbing colon is gone (I have a j-pouch) I'm always dehydrated, three hospitalizations for it. Recently I asked a kidney specialist if I could take two salt tablets, 1000mg each, daily. She approved. Today, e.g., since 11am I had a glass of water and two cups of coffee; no need to pee until 5pm. But please don't act on just this message. Check with your doctor. You may have a condition, such as heart, that would "contraindicate," as physicians like to say, the doing of what I do to battle dehydration.