The one I used was from a local feed store, and didn't have a brand name, and no information on the bottle at all of where it was made. That is not my first choice, but I needed it that day. It did work very well though.JanetMarie- what s the brand name of the fish anti biotic that you mentioned? I want to write it in my chicken journal should ever I need it.
I would recommend Fish Mox, Fish Cillin, Fish Pen, or any of the others made by US manufacturer, Thomas Labs, that you can find a supplier by doing a web search on fish antibiotics.