Weight loss after Enrofloxacin (Baytril) in dogs

186 reports to the FDA describe weight loss in dogs given Enrofloxacin. That is 4.9% of all reports for this medicine, compared with 1.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

186Reports
77%Marked serious
17%Recovered
37%Died or euthanised
14 daysTypical onset
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How soon it started

Same day
16 11%
1–2 days
16 11%
3–7 days
26 18%
1–4 weeks
30 21%
Over a month
55 38%

How the animals did

Recovered
31 17%
Recovered with lasting effects
1 0.5%
Still unwell when reported
52 28%
Died
31 17%
Euthanised
38 20%
Not known
33 18%

Problems reported at the same time

Age of the animals

Under 1 year
17
1–3 years
34
4–7 years
48
8–11 years
48
12+ years
38

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 weight loss in dogs?
186 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 14 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).

Weight loss with similar medicines

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