Weakness after Enrofloxacin (Baytril) in dogs

The FDA has received 215 reports of weakness in dogs after Enrofloxacin. That is 5.7% 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.

215Reports
71%Marked serious
13%Recovered
38%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
28 17%
1–2 days
33 20%
3–7 days
40 25%
1–4 weeks
29 18%
Over a month
32 20%

How the animals did

Recovered
23 11%
Recovered with lasting effects
5 2.3%
Still unwell when reported
53 25%
Died
37 17%
Euthanised
44 20%
Not known
53 25%

Problems reported at the same time

Age of the animals

Under 1 year
19
1–3 years
15
4–7 years
38
8–11 years
75
12+ years
63

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 weakness in dogs?
215 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).

Weakness with similar medicines

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