Weight gain after Enrofloxacin (Baytril) in dogs

26 reports to the FDA describe weight gain in dogs given Enrofloxacin. That is 0.7% of all reports for this medicine, compared with 0.6% across reports for all dog medicines.

26Reports

88%Marked serious

0.0%Recovered

54%Died or euthanised

22 daysTypical onset

How soon it started

Same day

0 0.0%

1–2 days

8 36%

3–7 days

2 9.1%

1–4 weeks

4 18%

Over a month

8 36%

How the animals did

Still unwell when reported

5 19%

Died

4 15%

Euthanised

10 38%

Not known

7 27%

Problems reported at the same time

17 65%

15 58%

14 54%

13 50%

12 46%

11 42%

11 42%

10 38%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 gain in dogs?: 26 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 22 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 gain with similar medicines

Weight gain after Amoxicillin + Clavulanate (Clavamox) 28 reports · 0.5% of its reports
Weight gain after Doxycycline 56 reports · 1.4% of its reports
Weight gain after Cefovecin (Convenia) 21 reports · 0.6% of its reports
Weight gain after Metronidazole 28 reports · 0.9% of its reports

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