Abnormal radiograph finding after Robenacoxib (Onsior) in cats

95 reports to the FDA describe abnormal radiograph finding in cats given Robenacoxib. That is 2.9% of all reports for this medicine, compared with 1.0% across reports for all cat medicines, so it is reported unusually often with this medicine.

95Reports
85%Marked serious
16%Recovered
37%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
25 35%
1–2 days
16 22%
3–7 days
11 15%
1–4 weeks
17 24%
Over a month
3 4.2%

How the animals did

Recovered
15 16%
Still unwell when reported
34 36%
Died
10 11%
Euthanised
25 26%
Not known
11 12%

Problems reported at the same time

Age of the animals

Under 1 year
14
1–3 years
17
4–7 years
27
8–11 years
23
12+ years
14

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.

Questions owners ask

Can Robenacoxib cause abnormal radiograph finding in cats?
95 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 2 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).

Abnormal radiograph finding with similar medicines

All reported side effects of Robenacoxib in cats · Medicines most reported with abnormal radiograph finding