Firocoxib (Previcox) side effects in dogs

8,006 reports sent to the FDA between 2005 and 2026 involve Firocoxib in dogs. The most reported problems were vomiting, loss of appetite, kidney problems. 26% were marked serious, and where it was recorded, signs eased after stopping the medicine in 69% of cases.

8,006Reports
26%Marked serious
87%Only medicine involved
10%Recovered
19%Died or euthanised
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About this medicine

Firocoxib relieves pain and inflammation from arthritis.

Products with this ingredient include Previcox. 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.

Most reported side effects

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't stop worms
10 0.1%
Didn't stop fleas
8 0.1%
Didn't stop ticks
2 0.0%

How soon problems started

Same day
457 18%
1–2 days
456 18%
3–7 days
552 22%
1–4 weeks
453 18%
Over a month
581 23%

Time from the first dose to the first sign, where both dates were reported (2,499 reports).

How the animals did

Recovered
762 9.5%
Recovered with lasting effects
40 0.5%
Still unwell when reported
527 6.6%
Died
1,243 16%
Euthanised
270 3.4%
Not known
5,164 65%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other non-steroidal anti-inflammatory drug (nsaid)s for dogs