Haematuria after Robenacoxib (Onsior) in cats

42 reports to the FDA describe haematuria in cats given Robenacoxib. That is 1.3% of all reports for this medicine, compared with 0.5% across reports for all cat medicines, so it is reported unusually often with this medicine.

42Reports
86%Marked serious
21%Recovered
31%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
7 21%
1–2 days
12 36%
3–7 days
7 21%
1–4 weeks
6 18%
Over a month
1 3.0%

How the animals did

Recovered
8 19%
Recovered with lasting effects
1 2.4%
Still unwell when reported
13 31%
Died
2 4.8%
Euthanised
11 26%
Not known
7 17%

Problems reported at the same time

Age of the animals

Under 1 year
9
1–3 years
3
4–7 years
12
8–11 years
7
12+ years
11

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 haematuria in cats?
42 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).

Haematuria with similar medicines

All reported side effects of Robenacoxib in cats · Medicines most reported with haematuria