Polycythaemia after Firocoxib (Previcox) in dogs

39 reports to the FDA describe polycythaemia in dogs given Firocoxib. That is 0.5% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

39Reports
15%Marked serious
2.6%Recovered
41%Died or euthanised
–Typical onset
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How the animals did

Recovered
1 2.6%
Still unwell when reported
2 5.1%
Died
16 41%
Not known
20 51%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
6
4–7 years
14
8–11 years
16
12+ years
2

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.

Questions owners ask

Can Firocoxib cause polycythaemia in dogs?
39 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.
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).

Polycythaemia with similar medicines

All reported side effects of Firocoxib in dogs · Medicines most reported with polycythaemia