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Originally Posted by Ellie May  Yes.
There are one year shots and three year shots. The vet can only sign off on a three year if they gave a three year. To complicate matters further, at least one company sells the one year and three year under different names, but it's the same vaccine (Defensor 1 and 3). This satisfies different states' requirements... |
My vet said that it is the same vaccine, just that you can get it for 1 or 3 year. You pay a little more for the 3 year. I get the 3 year. My dogs have all been fine with it, even my 3 pounder.