"A broad range product that clears severe fungus and bacteria related problems including cotton fungus, grey slime, scratching, open sores, bloody spots and streaks, fin/tail/mouth rot, swim bladder disease, dropsy and cloudy eyes. A great alternative to expensive sulfa drugs."
Just looking at it for a second, it looks REALLY strong! Jungle makes great medicines, but theyre usually pretty powerful.
How bad is his fin rot? If it isnt really bad, and only say, slight tattering of the fins and maybe a bit of discoloration, Id recommend switching to Aquarium Salt, and use 1-1.5tsp/gallon of it, pre-dissolved, with 100% daily water changes and a salt redose for 7-10 days :)