Peritonitis after Deracoxib (Deramaxx) in dogs

The FDA has received 617 reports of peritonitis in dogs after Deracoxib. That is 5.6% 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.

617Reports
26%Marked serious
7.8%Recovered
57%Died or euthanised
14 daysTypical onset
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How soon it started

Same day
4 3.8%
1–2 days
8 7.6%
3–7 days
28 27%
1–4 weeks
27 26%
Over a month
38 36%

How the animals did

Recovered
46 7.5%
Recovered with lasting effects
2 0.3%
Still unwell when reported
35 5.7%
Died
309 50%
Euthanised
42 6.8%
Not known
183 30%

Problems reported at the same time

Age of the animals

Under 1 year
6
1–3 years
117
4–7 years
221
8–11 years
215
12+ years
52

About this medicine

Deracoxib relieves pain and inflammation from arthritis or after surgery.

Products with this ingredient include Deramaxx. 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 Deracoxib cause peritonitis in dogs?
617 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 14 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).

Peritonitis with similar medicines

All reported side effects of Deracoxib in dogs · Medicines most reported with peritonitis