Unfortunately, I know exactly what you are talking about. My dogs have been treated 3 or 4 times for giardia. Our vet recommended not only pre and probiotics and digestive enzymes. He also suggested supplements to heal their intestines such as DGL, marshmallow root and plantain. I didn’t have a clue what they were. Lol! After research, I found that dogaware dot com has a great section on digestive orders with supplements that contained some of these. I’ve used Gastriplex by Thorne, Vetri-Probiotic BD, and Phytomucil by Animal Essentials with success. Also, make sure to get the dog retested because it often takes more than one treatment to get completely rid of it. Good luck. And, oh yes, of course, check with your vet first.
