Leucocytosis after Marbofloxacin in cats

26 reports to the FDA describe leucocytosis in cats given Marbofloxacin. That is 4.6% of all reports for this medicine, compared with 0.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

26Reports

15%Marked serious

0.0%Recovered

35%Died or euthanised

–Typical onset

How the animals did

Still unwell when reported

4 15%

Died

9 35%

Not known

13 50%

Problems reported at the same time

13 50%

10 38%

10 38%

10 38%

9 35%

6 23%

5 19%

5 19%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Marbofloxacin cause leucocytosis in cats?: 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.
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).

Leucocytosis with similar medicines

Leucocytosis after Butorphanol 41 reports · 1.8% of its reports
Leucocytosis after Methylprednisolone 57 reports · 3.5% of its reports
Leucocytosis after Ampicillin 21 reports · 7.0% of its reports

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