Responding to a post about cat with polycystic kidney disease...
ANY ONE that has kidney disease should be taking CHARCOAL. My 15 year old kitty (after coming home from the vet) gets a half a capsule of activated charcoal once a day in a spoonful or 2 of NON grain wet cat food (blue or abound for her) with a slippery elm/water mixture in all her food) to put mucus in her bowels, and about an eighth teaspoon of wheatgrass in one of her feedings. You don't want to mix charcoal with medicines or a lot of cat food, as it will be wasted; charcoal is famous for ridding the body of poisons, and along with filtering the toxins the kidneys are unable to handle, it will also "absorb" medicines/nutrition in the cat food. It is well worth sacrificing a spoon or two of cat food to mix the charcoal with, and she doesn't notice the taste AT ALL.
A month or so later she has almost regained her weight, grazes all day long like a pony on her food, eating equal amounts of food, and water and acts like a mere 8 yr. old! Since I am new at this, I don't know if or when I will stop the charcoal. I get the kind in jello caps so I can use half a cap a day and put the cap back on for the next day. Just an opinion from someone who isn't trained in cat medicine, for what it's worth; Cats are true carnivores, who eat only protein (bugs, birds, reptiles, meat, and a little grass) and we wonder why an animal who isn't designed to deal with carbs and grain gets obese! Then were told by the vet to get another grain-gluten dry food with "more fiber".
You can now get at the grocery store ground up chicken/pork/turkey with no antibiotics and serve it raw or cooked. This is how I got her to loose weight 10 yrs. ago when the vet made fun of how fat she was, by giving her real meat, no carbs. If you think gluten and excess carbs are bad for you, what do you think it does to an animal not designed to digest carbs? Anyway with the slippery elm/water in all her food, the charcoal and wheatgrass once a day she is pooping/drinking normally and very happy. I think other remedies are good, and we have to try to see what does or doesn't work, but ANY ONE WITH KIDNEY DISEASE SHOULD BE TAKING CHARCOAL TO TAKE UP THE SLACK OF WEAK KIDNEYS, 101.
Again, I'm not a vet or close to it, but I know what it is to have a sick cat who we almost lost and desperate to find something that works, and charcoal is wonderful for fixing up digestion matters in humans. I'm a private person (no twitter or facebook for me)so I don't even like writing this, except that I think it is so important and got such good results, and I've not heard of adverse effects with small amounts of charcoal, so if other things haven't worked for you, try it.