I have a cat with very similar issues, a reaction to a vaccine, allergy to chicken, and he also has IBD with constipation. The first of these issues was the allergic reaction to vaccines when he was 12 months old so I don't know if that was a trigger or if it was just the first thing that I noticed.
I can't find anything on the Wild Calling canned Turkey. I found Chicken and Pheasant. I do know that the Evo Chicken and Turkey does have herring in it. It's well down on the ingredient list but if she is very sensitive to fish it could be enough to trigger a reaction. Have you tried any of the very unusual proteins? My boy can't tolerate beef and he has recently developed a chicken allergy. Cats shouldn't be given too much fish even if they aren't sensitive to it. I am now trying things like lamb and rabbit. Natures Instinct makes LID diets is some unusual proteins. I have fed the lamb. The one thing that I like about them is that they use a matching liver in the food, like the lamb has lamb liver in it.Hounds and Gatos makes some in unusual proteins and they are cheaper than the natures instinct. They have a pretty limited area as far as stores go but they can be ordered online. They do use duck liver in their foods. Have you tried Beef or Venison?
I have never heard of a cat being allergic to Miralax, I suppose it is possible but I think it's very unlikely. I don't know much about digestive enzymes or probiotics. Hopefully someone that knows more about them can expand on it. I would check the ingredients on those. I know some probiotics do have dairy or soy in them.
I can't find anything on the Wild Calling canned Turkey. I found Chicken and Pheasant. I do know that the Evo Chicken and Turkey does have herring in it. It's well down on the ingredient list but if she is very sensitive to fish it could be enough to trigger a reaction. Have you tried any of the very unusual proteins? My boy can't tolerate beef and he has recently developed a chicken allergy. Cats shouldn't be given too much fish even if they aren't sensitive to it. I am now trying things like lamb and rabbit. Natures Instinct makes LID diets is some unusual proteins. I have fed the lamb. The one thing that I like about them is that they use a matching liver in the food, like the lamb has lamb liver in it.Hounds and Gatos makes some in unusual proteins and they are cheaper than the natures instinct. They have a pretty limited area as far as stores go but they can be ordered online. They do use duck liver in their foods. Have you tried Beef or Venison?
I have never heard of a cat being allergic to Miralax, I suppose it is possible but I think it's very unlikely. I don't know much about digestive enzymes or probiotics. Hopefully someone that knows more about them can expand on it. I would check the ingredients on those. I know some probiotics do have dairy or soy in them.