Abnormal radiograph finding after Enrofloxacin (Baytril) in cats

The FDA has received 39 reports of abnormal radiograph finding in cats after Enrofloxacin. That is 2.5% of all reports for this medicine, compared with 1.0% across reports for all cat medicines, so it is reported unusually often with this medicine.

39Reports
77%Marked serious
2.6%Recovered
62%Died or euthanised
10 daysTypical onset
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How soon it started

Same day
6 23%
1–2 days
2 7.7%
3–7 days
3 12%
1–4 weeks
7 27%
Over a month
8 31%

How the animals did

Recovered
1 2.6%
Still unwell when reported
6 15%
Died
9 23%
Euthanised
15 38%
Not known
8 21%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
6
4–7 years
11
8–11 years
8
12+ years
13

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 abnormal radiograph finding in cats?
39 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 10 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).

Abnormal radiograph finding with similar medicines

All reported side effects of Enrofloxacin in cats · Medicines most reported with abnormal radiograph finding