I would be very careful and skeptical of using it. First of all, they do not publish what is in it, not even in their MSDS, calling it "proprietary," which means you as the consumer really have no idea at all what you are putting into your tank.
Second, they claim it as "chemical free," which is simply an untrue statement and any respectable company that employs anyone qualified to research their products (like a chemist for example) would know that to be the case.
Third, they claim it not as a treatment for any of the "diseases" it is supposed to be used for, but rather as an immune system stimulant for your fish, which is really really really shady.
If I were you, I'd steer clear and go with a defined product, like an appropriate antibiotic for a bacterial infection, a copper based medication for ich and friends, an oral antiparasitic for intestinal parasites etc. If there were a new product out and you wanted to try "next big thing" in marine fish medications I might even be in favor of it, if there company making it published what compounds were in their product and there was a reasonable reason to believe they would work. If you want to stimulate the immune system of your fish, feed them high quality foods.
What condition are you trying to treat anyway?