Polymyxin B side effects in dogs

74 reports sent to the FDA between 1998 and 2026 involve Polymyxin B in dogs. The most reported problems were vomiting, corneal ulcer, skin redness. 26% were marked serious.

74Reports
26%Marked serious
36%Only medicine involved
22%Recovered
6.8%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Vomiting
15 20%
Corneal ulcer
10 14%
Skin redness
8 11%
Loss of appetite
7 9.5%
Ocular discharge
6 8.1%
Lethargy
6 8.1%
Swelling
6 8.1%
Conjunctivitis
5 6.8%
Eye pain
5 6.8%
Blepharospasm
5 6.8%
Eye disorder (for photophobia see 'neurological')
5 6.8%
Blood problems
4 5.4%
Diarrhea
4 5.4%
Weight loss
4 5.4%
Corneal disorder
4 5.4%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
14 19%
Didn't prevent heartworm
3 4.1%
Didn't stop fleas
1 1.4%

How soon problems started

Same day
5 10%
1–2 days
10 21%
3–7 days
13 27%
1–4 weeks
6 13%
Over a month
14 29%

Time from the first dose to the first sign, where both dates were reported (48 reports).

How the animals did

Recovered
13 18%
Recovered with lasting effects
3 4.1%
Still unwell when reported
14 19%
Euthanised
5 6.8%
Not known
39 53%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other medicines for dogs