It is what it's supposed to be, it does what it's supposed to do. Beware the powder while emptying the packets--it smells terrible and you'll taste it for hours. But that's not a flaw--it's simply the nature of the substance.
Unfortunately this did not work for my fish. I followed the directions but it had no affect.
This product did not work and in fact killed all my fish. I used as instructions indicated and now all my fish are dead.
This product was purchased to help eliminate infection from a few fish in my tank which got popeye any body fungus.
Got this for a fish that lost an eye and a rubberlip pleco I received with fin rot. It did not help the fin rot whatsoever. It may have even progressed. Dosed according to directions. It’s possible my fish was infected with a gram negative bacteria as this only covers gram positive from what I’ve researched. Idk if it’s possible but I wish I could get a refund or replacement with Maracyn 2 as this is a bit more costly compared to other medications.