Nectar mom-
First, if a food was causing an issue to the point that I had to give all 4 pepcid, I would not be using that food. Unfortunately, as you know, each dog is different, so it can be trial and error until you find one that works for all problems that a given dog may have-some do better on grain free, some do better on grain inclusive or raw etc. Several of my dogs do not do well if the kibble protein goes over 33 or so percent. Why, I have no idea as they do fine with raw/canned etc that exceed that amount.
