Breathing problems after Robenacoxib (Onsior) in cats

217 reports to the FDA describe breathing problems in cats given Robenacoxib. That is 6.6% of all reports for this medicine, compared with 4.7% across reports for all cat medicines.

217Reports
79%Marked serious
28%Recovered
33%Died or euthanised
Same dayTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
106 52%
1–2 days
45 22%
3–7 days
14 6.9%
1–4 weeks
19 9.4%
Over a month
18 8.9%

How the animals did

Recovered
60 28%
Recovered with lasting effects
1 0.5%
Still unwell when reported
63 29%
Died
45 21%
Euthanised
27 12%
Not known
21 9.7%

Problems reported at the same time

Age of the animals

Under 1 year
39
1–3 years
51
4–7 years
34
8–11 years
47
12+ years
37

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 breathing problems in cats?
217 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).

Breathing problems with similar medicines

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