C.R.
I believe this stuff is Flagyl if I remember correctly from my old vet tech days.
It tastes SO bad. We used to tell pet owners to roll it in some butter to coat it so it wouldn't taste so bad. Not too sure about crushing it up, it taste that bad. That it if it's a pill form. If it's a liquid I would suggest maybe some orange juice, something tart would help hide it.
C.