"I got two betta fish from a Petco store on two separate occasions that were returned because owners had put them together with other bettas and they ended up half eaten (don't do this, people!!!). ;)
Anyway, I used MELAFIX intead of BETTAFIX due to the severity of their conditions. There was drastic improvement (fin regrowth, wound healing) in less than two weeks. If I didn't see it, I wouldn't believe it."