Death after Enrofloxacin (Baytril) in cats

The FDA has received 272 reports of death in cats after Enrofloxacin. That is 17% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

272Reports

64%Marked serious

0.0%Recovered

95%Died or euthanised

3 daysTypical onset

How soon it started

Same day

28 18%

1–2 days

47 31%

3–7 days

24 16%

1–4 weeks

26 17%

Over a month

28 18%

How the animals did

Died

154 57%

Euthanised

104 38%

Not known

14 5.1%

Problems reported at the same time

Eye or vision problems

87 32%

72 26%

71 26%

59 22%

45 17%

40 15%

37 14%

35 13%

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 death in cats?: 272 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 3 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).

Death with similar medicines

Death after Cefovecin (Convenia) 1,898 reports · 22% of its reports
Death after Amoxicillin + Clavulanate (Clavamox) 372 reports · 16% of its reports
Death after Amoxicillin 112 reports · 22% of its reports
Death after Metronidazole 67 reports · 17% of its reports
Death after Doxycycline 74 reports · 29% of its reports

All reported side effects of Enrofloxacin in cats · Medicines most reported with death