Afraid as far as I know different brands of the jab are not the same. When I got Minstrel, luckily his breeder's vet used the same brand as mine, so I was able to get the 2nd done at my vet. However when I got Branston his breeder's vets and mine used different brands, and she lived quite a long way away, so as she was holding on to Branston for an extra couple of weeks, anyway, he got his 2nd one done there.