I had 5 ft. of my ileum removed about 5 years ago and am considered to have borderline short bowel syndrome ( I am not kn TPN but have digestive issues). I was told after having that emergency surgery that I should drink an oral rehydration solution for the rest of my life and minimal plain water. Pedialyte is perfect, but spendy. I make my own version by adding 2 Tbsp sugar and 3/4 tsp salt to 32 ounces of water (I add one packet of True Lemon to improve the taste). This has served me well as I have never been hospitalized for dehydration :). There are other recipies out there, too, but this is my favorite and it is simple.