Otitis externa after Enrofloxacin (Baytril) in dogs

The FDA has received 32 reports of otitis externa in dogs after Enrofloxacin. That is 0.8% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

32Reports

81%Marked serious

25%Recovered

6.3%Died or euthanised

25 daysTypical onset

How soon it started

Same day

7 30%

1–2 days

0 0.0%

3–7 days

3 13%

1–4 weeks

2 8.7%

Over a month

11 48%

How the animals did

Recovered

6 19%

Recovered with lasting effects

2 6.3%

Still unwell when reported

9 28%

Died

1 3.1%

Euthanised

1 3.1%

Not known

13 41%

Problems reported at the same time

13 41%

13 41%

9 28%

9 28%

8 25%

6 19%

6 19%

Conjunctivitis

6 19%

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 otitis externa in dogs?: 32 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 25 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).

Otitis externa with similar medicines

Otitis externa after Amoxicillin + Clavulanate (Clavamox) 41 reports · 0.8% of its reports

All reported side effects of Enrofloxacin in dogs · Medicines most reported with otitis externa