Diarrhea after Firocoxib (Previcox) in dogs

1,200 reports to the FDA describe diarrhea in dogs given Firocoxib. That is 15% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

1,200Reports
24%Marked serious
14%Recovered
17%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
64 17%
1–2 days
95 25%
3–7 days
91 24%
1–4 weeks
71 19%
Over a month
60 16%

How the animals did

Recovered
165 14%
Recovered with lasting effects
3 0.3%
Still unwell when reported
92 7.7%
Died
166 14%
Euthanised
39 3.3%
Not known
735 61%

Problems reported at the same time

Age of the animals

Under 1 year
44
1–3 years
126
4–7 years
250
8–11 years
403
12+ years
271

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 diarrhea in dogs?
1,200 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).

Diarrhea with similar medicines

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