it was my understanding that banamine is a pain killer, when we were in the dairy business i gave dry cows banamine a lot (we used the off brand suppressor) and never had any trouble. never gave it for milk for milk fever, we just gave them a bottle or two of 1/2 & 1/2 calcium and dextrose. i would like to know what your vet says and i will call my vet and find out.