Allergic reaction after Enrofloxacin (Baytril) in dogs

The FDA has received 119 reports of allergic reaction in dogs after Enrofloxacin. That is 3.2% of all reports for this medicine, compared with 2.3% across reports for all dog medicines.

119Reports
47%Marked serious
21%Recovered
18%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
35 51%
1–2 days
9 13%
3–7 days
6 8.8%
1–4 weeks
13 19%
Over a month
5 7.4%

How the animals did

Recovered
24 20%
Recovered with lasting effects
1 0.8%
Still unwell when reported
21 18%
Died
13 11%
Euthanised
9 7.6%
Not known
51 43%

Problems reported at the same time

Age of the animals

Under 1 year
16
1–3 years
23
4–7 years
41
8–11 years
27
12+ years
9

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 allergic reaction in dogs?
119 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 the same day 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).

Allergic reaction with similar medicines

All reported side effects of Enrofloxacin in dogs · Medicines most reported with allergic reaction