Jungle Labs don't reveal their ingredients but they claim this: An effective anti-protozoan, anti-bacterial treatment to clear advanced fungus and bacteria problems. Highly effective against a wide variety of of diseases, including columnaris, costiasis, dropsy, furunculosis, hemorrhagic septicemia, fin and tail rot, mouth rot, sore or cloudy eyes and swim bladder disease.
This is quite a wide-ranging cocktail. I'm sure your fish spat it right out again. Fish are so savvy about chemicals it's hard to get them to eat medicated food when you want them too.
You should always know what it is you're putting in the aquarium. I don't like stuff that doesn't list ingredients. That's just me.