Breathing problems after Enrofloxacin (Baytril) in dogs

The FDA has received 307 reports of breathing problems in dogs after Enrofloxacin. That is 8.1% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

307Reports
82%Marked serious
20%Recovered
48%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
65 25%
1–2 days
50 19%
3–7 days
40 16%
1–4 weeks
43 17%
Over a month
59 23%

How the animals did

Recovered
59 19%
Recovered with lasting effects
3 1.0%
Still unwell when reported
53 17%
Died
68 22%
Euthanised
78 25%
Not known
46 15%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
48
4–7 years
85
8–11 years
95
12+ years
62

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 breathing problems in dogs?
307 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 4 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).

Breathing problems with similar medicines

All reported side effects of Enrofloxacin in dogs · Medicines most reported with breathing problems