I was wondering today if anyone knows what ingredients go into making the heartworm tablets or chews? Aside from the obvious ingredient such as ivermectin and such... what goes into making and preserving the chew or tablet? The reason I ask is that I was looking at the ingredients of this vitamin my vet recommended and it included ethoxequin. Also, just wondering if they have any glutens and such.
I don't like giving my dogs heartworm prev. but where I live, its either give it or they will get heartworms almost all year around.