Vocalising after Robenacoxib (Onsior) in cats

The FDA has received 150 reports of vocalising in cats after Robenacoxib. That is 4.6% of all reports for this medicine, compared with 3.1% across reports for all cat medicines.

150Reports

59%Marked serious

27%Recovered

31%Died or euthanised

1 daysTypical onset

How soon it started

Same day

54 39%

1–2 days

37 27%

3–7 days

16 12%

1–4 weeks

15 11%

Over a month

15 11%

How the animals did

Recovered

39 26%

Recovered with lasting effects

2 1.3%

Still unwell when reported

43 29%

Died

25 17%

Euthanised

21 14%

Not known

20 13%

Problems reported at the same time

53 35%

45 30%

35 23%

32 21%

27 18%

24 16%

24 16%

16 11%

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 vocalising in cats?: 150 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 1 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).

Vocalising with similar medicines

Vocalising after Meloxicam (Metacam) 108 reports · 3.0% of its reports

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