Fever after Enrofloxacin (Baytril) in dogs

280 reports to the FDA describe fever in dogs given Enrofloxacin. That is 7.4% of all reports for this medicine, compared with 1.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

280Reports
74%Marked serious
9.6%Recovered
38%Died or euthanised
7 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
41 20%
1–2 days
36 17%
3–7 days
33 16%
1–4 weeks
41 20%
Over a month
58 28%

How the animals did

Recovered
26 9.3%
Recovered with lasting effects
1 0.4%
Still unwell when reported
80 29%
Died
51 18%
Euthanised
55 20%
Not known
67 24%

Problems reported at the same time

Age of the animals

Under 1 year
24
1–3 years
56
4–7 years
95
8–11 years
79
12+ years
23

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 fever in dogs?
280 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).

Fever with similar medicines

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