Lameness after Firocoxib (Previcox) in dogs

The FDA has received 85 reports of lameness in dogs after Firocoxib. That is 1.1% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

85Reports
59%Marked serious
11%Recovered
29%Died or euthanised
8 daysTypical onset
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How soon it started

Same day
11 20%
1–2 days
8 15%
3–7 days
8 15%
1–4 weeks
10 18%
Over a month
18 33%

How the animals did

Recovered
8 9.4%
Recovered with lasting effects
1 1.2%
Still unwell when reported
18 21%
Died
11 13%
Euthanised
14 16%
Not known
33 39%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
10
4–7 years
21
8–11 years
33
12+ years
16

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 lameness in dogs?
85 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 8 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).

Lameness with similar medicines

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