
Karen,
Curious as to why you want only Duramune? Best course of action is to ring vets in your area and ask what brand they use. After my vet switched to Duramune one of my dogs had a bad reaction to it, although he never had and still does not react to any other brand. So I had the opposite problem - and fairly easily found a vet that does not use it; which is where I take my dogs now for their boosters.