YOU need to take it to a vet you should not use antibiotic without a proper culture.
There are various cause for RI which means some antibiotics may not work hence the need for the culture.
Helping is one thing playing vet injecting anything and everything without proper culture is another.
What if it is not a RI but something more serious?
http://ball-pythons.net/forums/showt...ce-Reptile-Vet
http://ball-pythons.net/forums/showt...Causes-of-URIs