medications and kidney failure

My 7-year-old cat, Henry, was in acute renal failure one month ago.  His weekly blood tests since then have all been normal, except for this last time, when his urine was found to have blood and bacteria.  He has also had diarrhea for a few days, and the vet thinks he has both a UTI and gastro-int. infection.  She has prescribed both Orbax and Metronidazole for him.  My question is: is it safe for a cat with a history of kidney failure to be taking these drugs, and both at the same time?

Thanks!

[zodiacqueen]

What was the acute kidney failure from?  And, if it's acute and not chronic kidney failure, then the meds will be fine.  You really don't have much of a choice, you can't let a bacterial infection go-especially a bladder infection-if untreated that goes to the kidneys and I know you don't want that.

I understand your concerns completely, though.  You're worried about stressing the kidneys out w/meds after he's recovering.  I think it would do more harm than good to avoid the meds.  Just curious, what is orbax?