Fever after Firocoxib (Previcox) in dogs

The FDA has received 117 reports of fever in dogs after Firocoxib. That is 1.5% of all reports for this medicine, compared with 1.4% across reports for all dog medicines.

117Reports
44%Marked serious
13%Recovered
35%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
13 25%
1–2 days
10 19%
3–7 days
12 23%
1–4 weeks
7 13%
Over a month
10 19%

How the animals did

Recovered
14 12%
Recovered with lasting effects
1 0.9%
Still unwell when reported
17 15%
Died
31 26%
Euthanised
10 8.5%
Not known
44 38%

Problems reported at the same time

Age of the animals

Under 1 year
8
1–3 years
19
4–7 years
34
8–11 years
36
12+ years
18

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 fever in dogs?
117 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 4 days 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).

Fever with similar medicines

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