Death after Marbofloxacin in cats

The FDA has received 100 reports of death in cats after Marbofloxacin. That is 18% 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.

100Reports
44%Marked serious
0.0%Recovered
95%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
8 20%
1–2 days
5 13%
3–7 days
10 25%
1–4 weeks
14 35%
Over a month
3 7.5%

How the animals did

Died
67 67%
Euthanised
28 28%
Not known
5 5.0%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
12
4–7 years
18
8–11 years
16
12+ years
47

About this medicine

Type: medicine.

Questions owners ask

Can Marbofloxacin cause death in cats?
100 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).

Death with similar medicines

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