Kaopectate, a human medicine, is safe to give to most all kinds of animals. Just make sure you don't over dose. Also try changing your kittens diet to a bland one, such as mabey a lamb and rice variety of it's favorite brand. I would stick to dry food for a while, no scraps or canned food.
Is it eating? When my cat, Boo Boo, was sick from being spayed (had a reaction to the anastesia(sp), she would seriously not move, and wouldnt eat, basically feeling really bad. TURKEY BABY FOOD Works wonders, got my cat back on its feet in a day or two (cant remember, it was a long time ago.) When my other cat Kitten was sick this year, she wouldnt eat. TURKEY BABY FOOD My other cat, Whiskers got conjunctivitis in her eye and wouldnt eat much, and wouldnt take her pills. TURKEY BABY FOOD I swear my the stuff. (I just use the little gerber jars).
well if the kitty is eating, then i will stop all wet food, canned food. That will usually do the trick. You might want to gradually do this though and not go straigth to dry food. If you are already giving wet and dry food, give it just a little pinch of wet food and the rest of the day dry food, if you try to cut out the wet food all together you might upset the kitty further. But dry food in my opinion is the way to go. Wet food rots out the teeth and makes waste even messer and smelly. Just do that for a few days and then cut out the wet food all together. And things should get better. If not i could also be the brand of dry food that doesnt agree with your kitty. It will just be trial and error. But it is certainly a start. Now if your kitty isnt eating. Unfortunately i dont have any experience in that area. But i have heard of the Kaopetate thing. I hope this helps out. As long as the cat continues to drink and eat though, and you find yourself refreshing the water dish, you will be OK until Monday. Good luck I hope he/she is feeling better soon :).
Yogurt. Not too much. If you could get florabalance it would clear right up, maybe...the local humane was buying it from me because they said it was the only thing they had that would work. I use tribissen on dogs, don't know if it's good for cats. Try to make the cat's diet dry food as opposed to canned and give pedialyte to keep it from getting dehydrated? I do this with Lab pups, don't quote me on cats...Call drsfostersmith.com, they are open 24/7 they can't give vet advice, maybe, but they may have products to recommend.
If Nutro Ultra makes cat food, it has the acidophilus...check the label, darn sight easier than the other. I was using it on Lab pups for same...if they make kibble it will be great. Best dog food I ever used. Heck, see if they have a sample dog food and give Kitty that, probably much better than any cat food you are using.