I have been back and forth to vet and we are both confused my dog won't eat... He has lost a lot of teeth but this wasn't a problem all of a sudden he won't eat he does drink water. Doctor gave him a pain shot , I put him on pain pills and muscle relaxor from past problems he does show a bit of disk problem so we figured he was in pain. He developed blleding urin from this stuff and I stopped those meds... back to vet.. shot for antibiotic and pills twice a day.I have tried alll kinds of dog food because of his lack of teeth using a bullet to liquefy it even... any ideas??

Is this an old dog or a young dog? Certain problems are age related.

I would work with the vet a little more, and if no improvement before long, perhaps try a second vet.