So sorry that Fritz ia feeling sick. We have always been advised to use pepto-bismol for diarrhea in dogs. It is very hard to get out of carpet! Years ago I had my dog and my moms dog who both had diarrhea. I was trying to pry their darling little mouths open and give them the medication by syringe and a good share went on the carpet! The vet did say he was more concerned with older dogs and small dogs. I have also used rice with hamb. or canned food mixed.