chronic diarrhea

Has anyone tried Nutriscan by Dr. Dodds for canine food intolerance? We are on month 3 of metronidazole for my 9 month old puppy, as well as a venison and potato food trial. I feel like Nutriscan could save my poor puppy a lot of pain from going through food trials, but wanted to see if anyone...

My 1.5 year old boxer always has diarrhea. He was treated for coccidia about a month and a half ago, has had 2 stool samples done by our vet since and definitely has no parasites or worms. However, ever since this, he has had very runny poops! They were never 'hard' by any means but they...