Hiding after Robenacoxib (Onsior) in cats

146 reports to the FDA describe hiding in cats given Robenacoxib. That is 4.5% of all reports for this medicine, compared with 2.4% across reports for all cat medicines, so it is reported unusually often with this medicine.

146Reports
51%Marked serious
17%Recovered
18%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
50 36%
1–2 days
42 30%
3–7 days
17 12%
1–4 weeks
18 13%
Over a month
11 8.0%

How the animals did

Recovered
25 17%
Still unwell when reported
61 42%
Died
14 9.6%
Euthanised
12 8.2%
Not known
34 23%

Problems reported at the same time

Loss of appetite
97 66%
Lethargy
48 33%
Behaviour change
38 26%
Death
26 18%
Vomiting
24 16%
Breathing problems
21 14%
Fever
21 14%
Not drinking
20 14%

Age of the animals

Under 1 year
12
1–3 years
30
4–7 years
43
8–11 years
33
12+ years
27

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 hiding in cats?
146 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).

Hiding with similar medicines

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