Robenacoxib (Onsior) side effects in dogs

115 reports sent to the FDA between 2014 and 2026 involve Robenacoxib in dogs. The most reported problems were swelling, loss of appetite, vomiting. 34% were marked serious.

115Reports
34%Marked serious
27%Only medicine involved
28%Recovered
11%Died or euthanised
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About this medicine

Robenacoxib relieves pain and inflammation (short courses).

Products with this ingredient include Onsior. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

NSAIDs can affect the stomach, liver and kidneys. Vets usually recommend blood tests before and during long-term use.

Most reported side effects

24 21%
Vomiting
16 14%
Injection site reaction
15 13%
Diarrhea
13 11%
Lethargy
10 8.7%
Liver problems
10 8.7%
Nausea
6 5.2%
Kidney problems
6 5.2%
Itching
6 5.2%
Drooling
5 4.3%
Cardiac arrest
4 3.5%
Increased heart rate
4 3.5%
Hypoalbuminaemia
3 2.6%
Elevated globulins
3 2.6%

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
18 16%

How soon problems started

Same day
58 56%
1–2 days
22 21%
3–7 days
9 8.7%
1–4 weeks
7 6.8%
Over a month
7 6.8%

Time from the first dose to the first sign, where both dates were reported (103 reports).

How the animals did

Recovered
31 27%
Recovered with lasting effects
1 0.9%
Still unwell when reported
44 38%
Died
11 9.6%
Euthanised
2 1.7%
Not known
26 23%

Breeds named most often

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

Other non-steroidal anti-inflammatory drug (nsaid)s for dogs