Hopefully the meds will work. Both of my kittens were on Metronidazole and this didn't help them. I hope that there diarrhea problems will soon be a thing of the past. Good luck.

What kind of food are you feeding them? Have you switched brands recently? You can also try feeding them some rice or pumpkin to make their stools firmer. I've also heard that some deworming medicines will cause them to have diarrhea but it shouldn't last long. Once again good luck.