Well the saga continues with my dogs diarrhea and I appreciate all the help I've gotten. Synopsis: 19 month old male, feeding 6 cups EUK 30/20 to maintain weight, has had diarrhea for about 10 months. I believe we have it narrowed down stress/excitement induced colitis. Example, after about a week off of training took him out ran a water blind past an island, he disappeared behind the island I got a good correction and not 15 mins later he had diarrhea, another I was packing to go hunting and he was walking to the truck and around the house with me knowing what was going on, diarrhea. Vet has him on Drenamin 3700 and Canine Enteric Support A1450, been on it for about 5 or 6 weeks now with no change in diarrhea. I have discussed with Dr Ed the use of a Thundershirt and have used his hunting vest in place of the actual Thundershirt and it does not seem to help, used it at a training day but hearing guns go off and whistles etc when I got him out of the truck, diarrhea. I have done a search and saw the use of Tylan and proposed that to my vet, she was extremely reluctant and didn't think I could get him to eat it. If anyone has used Tylan to successfully treat this how did you get them to eat it? If anyone has any suggestions my ears are open, to cover all bases, we have tested for parasites multiple times and done blood work that ruled out EPI and a bunch of other things. Special thanks to Dr Ed for all the help and thanks to everyone else thats given me advice, tryin to get this fixed has not been pleasant.