Are they little packets that you mix into water? I was going to suggest to maybe try this exact thing that's why I asked, I thought he was going to tell you to try melafix. I have never personally had to use it but it was suggested to me once from a pretty reputable breeder for a bacterial infection, the reason I didn't use it is because I just ended up bringing my frog to the vet because there was one available. He told me though that he has had success in treating bacteria infections with it but he also said they were mild or right at the beginning. This is why he suggested it to me is because I had caught it in the early stages but again I chose to go the vet route. Your guy doesn't to look to good though and I really hate to say it but if it is a bacterial infection that it may be to late to treat with Erythromycin.