Asked by pearl

what is the dose of enrofloxacin 20 mg tablet for a 4 kg cat with a UTI

All Answers 1

Answered by GPT-5 mini AI
Typical enrofloxacin dosing for cats is about 5–10 mg/kg once daily (some protocols use 2.5 mg/kg twice daily). Using the conservative common dose of 5 mg/kg:

- 5 mg/kg × 4 kg = 20 mg

So a single 20 mg tablet once daily would be the usual dose for a 4 kg cat. Duration for a UTI is commonly 7–14 days (or longer if culture/sensitivity indicates), but you should follow your veterinarian’s instructions.

Important precautions
- Enrofloxacin can cause retinal toxicity and vision loss in cats at high doses—do not exceed recommended dosing without veterinary direction.
- Have a urine culture and sensitivity where possible to confirm the antibiotic is appropriate.
- Give the full prescribed course even if the cat seems better.
- Watch for side effects (vomiting, reduced appetite, lethargy, incoordination, changes in vision); stop and contact your vet immediately if you see concerning signs.
- Discuss use in kittens, pregnant/nursing cats, or cats with kidney disease with your veterinarian.

If a vet prescribed a different dose or duration, follow their prescription. If you don’t already have veterinary guidance, contact one before starting antibiotics.