I'm so sorry to hear that Magic has a UTI. Did he also have a crystal problem? There are a few different Hills Prescription food formulas that help crystal problems. They are the C/D and S/D formulas. There's also one from Royal Canin called Royal Canin S/O formula. This is what my cats are currently on. It makes them drink more and pee more so it helps to flush out their systems. I hope that Magic recovers quickly and feels better soon. Good luck and please keep us updated.