|SIDE EFFECTS (3)||100%|
[SIDE EFFECTS] Our male Corgi, from age 4, started having seizures regularly after accidently given two doses of Heartguard on the same day (am & pm). Found out later that Collies are very sensitive to Heartguard. Our Pemb Welsh Corgi was a white and tan. This mixture came about by inc the Collie breed. My vet never said a word about this. Later we ended up having to put our Corgi on Phen Barb and potassium bromide. After starting him on this nasty combo--his seizures all but stopped, but then he came down with Degenerative Myopathy (we tried everything in the book before PB and PB).