Where exactly was it back ordered? Did you try Bass or Klubertanz? I went to pick up some terramycin locally but it was powder form for drinking water, used for enteritis and respiratory conditions. So they named 3-4 different things ending in "ycin", that I can't remember, that were comoarable to the terramycin. They did recommend Veterycin Eye Wash, which is what I got. Just applied last night and this morning, the kits eye wasn't closed this morning so improvement so far.