
Hi Carene,
I know of several dogs who have allergic / intolerant reactions to many foods and prescription only completes by Hills, RC, Waltham or Purina is all they can eat - literally. However these are dogs that are on them for medically and surgically diagnosed chronic GI, liver or kidney problems.
An exclusion trial is essential to determine what can be fed without causing a reaction and at the same time alleviating the condition originally being treated. This is effectively why your vet has put your lab on this regime and is so insistent that *nothing* else is added. With Hills and similar prescription only foods, the common potential allergens are there, but broken down into tiny parts so the system hopefully won't recognise them.
>I even asked about Logic toothpaste, and was told very firmly, "NO- not while the trial is in progress!". Anyone else had similar advice?
Absolutely - an exclusion trial is just that - oral intake of everything else but the agreed diet is
excluded ;) This is where these trials tend to fail - usually someone in the household (or other furry family member) will contribute something to the "trial dog" which renders the exercise pointless.
Despite occasional outcries to the contrary, prescription diets have their place - albeit IME on a more limited basis than they are often suggested by the veterinary profession.
Personally I would have opted for a novel protein and novel carb diet for the dog either commercial or home prepared. The fact that you normally feed a chicken and rice based diet, then opt for an alternative to BOTH these ingredients
nb. two ingredients the dog has never eaten before but again to the
absolute exclusion of everything else. A very good quality food which I and many others have used to excellent effect which excludes rice as the main filler is Wafcol Salmon & Potato. It has not been scientifically engineered to disguise common allergens - they're not in it in the first place - is less than half the price of the prescription diet and readily available elsewhere than from your vet :) However now that you have started the trial, it is a judgement call whether or not you wish to continue with Hills z/d ultra.
Should you decide to switch away from this, any food you do decide to change to would still require *a strict regime and the absolute compliance of everyone else in the household* - that's the hard part :rolleyes:
HTH, good luck, Teri :)
EDITED TO ADD: chicken is one of the most common protein intolerances - probably because it is one of the most commonly used ;)