Vomiting after Polymyxin B in cats

44 reports to the FDA describe vomiting in cats given Polymyxin B. That is 22% of all reports for this medicine, compared with 18% across reports for all cat medicines.

44Reports
25%Marked serious
32%Recovered
4.5%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
17 71%
1–2 days
3 13%
3–7 days
1 4.2%
1–4 weeks
1 4.2%
Over a month
2 8.3%

How the animals did

Recovered
14 32%
Still unwell when reported
5 11%
Died
2 4.5%
Not known
23 52%

Problems reported at the same time

16 36%
Diarrhea
12 27%
Drooling
9 20%
Breathing problems
9 20%
Loss of appetite
8 18%
Itching
4 9.1%

Age of the animals

Under 1 year
11
1–3 years
15
4–7 years
6
8–11 years
5
12+ years
4

About this medicine

Type: medicine.

Questions owners ask

Can Polymyxin B cause vomiting in cats?
44 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 the same day 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).

Vomiting with similar medicines

All reported side effects of Polymyxin B in cats · Medicines most reported with vomiting