Disorientation after Robenacoxib (Onsior) in cats

50 reports to the FDA describe disorientation in cats given Robenacoxib. That is 1.5% of all reports for this medicine, compared with 1.0% across reports for all cat medicines.

50Reports

60%Marked serious

32%Recovered

16%Died or euthanised

Same dayTypical onset

How soon it started

Same day

24 51%

1–2 days

11 23%

3–7 days

4 8.5%

1–4 weeks

3 6.4%

Over a month

5 11%

How the animals did

Recovered

15 30%

Recovered with lasting effects

1 2.0%

Still unwell when reported

16 32%

Died

4 8.0%

Euthanised

4 8.0%

Not known

10 20%

Problems reported at the same time

17 34%

14 28%

13 26%

13 26%

11 22%

11 22%

9 18%

7 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 disorientation in cats?: 50 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).

Disorientation with similar medicines

Disorientation after Meloxicam (Metacam) 36 reports · 1.0% of its reports

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