Yep, it's Elbagin (sp)!! I use it and I love it!! Just a small pinch in the bag along with a little dechlor goes a long way in aiding the fish during transport. I even use it in my soft sided transport tank when we travel with fish. Good stuff!!
Used with salt at 10 grms per ton of water, it can aid in ulcer problems as well. This saved a young Kohaku of mine over a year ago where no antibiotic would touch it. The ulcer was so bad it ate right through the muscle wall and you could see her insides. This was recommended. I used it according to the instructions offered and within 2 weeks she was well on the mend. Last summer she took Young Champ in Chicago!! She's looking really good!!