Swelling after Enrofloxacin (Baytril) in cats

58 reports to the FDA describe swelling in cats given Enrofloxacin. That is 3.7% of all reports for this medicine, compared with 1.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

58Reports

48%Marked serious

6.9%Recovered

36%Died or euthanised

7 daysTypical onset

How soon it started

Same day

7 24%

1–2 days

1 3.4%

3–7 days

7 24%

1–4 weeks

8 28%

Over a month

6 21%

How the animals did

Recovered

4 6.9%

Still unwell when reported

6 10%

Died

12 21%

Euthanised

9 16%

Not known

27 47%

Problems reported at the same time

21 36%

15 26%

15 26%

11 19%

Abnormal radiograph finding

11 19%

Injection site reaction

10 17%

Eye or vision problems

10 17%

Allergic reaction

8 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Enrofloxacin treats bacterial infections.

Products with this ingredient include Baytril. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Enrofloxacin cause swelling in cats?: 58 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?: In half of the reports with dates, it started within 7 days of the first dose.
What should I do?: Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Swelling with similar medicines

Swelling after Cefovecin (Convenia) 456 reports · 5.3% of its reports
Swelling after Amoxicillin + Clavulanate (Clavamox) 86 reports · 3.6% of its reports

All reported side effects of Enrofloxacin in cats · Medicines most reported with swelling