Excessive urination after Firocoxib (Previcox) in dogs

The FDA has received 175 reports of excessive urination in dogs after Firocoxib. That is 2.2% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

175Reports
33%Marked serious
7.4%Recovered
13%Died or euthanised
9 daysTypical onset
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How soon it started

Same day
5 7.7%
1–2 days
11 17%
3–7 days
15 23%
1–4 weeks
11 17%
Over a month
23 35%

How the animals did

Recovered
13 7.4%
Still unwell when reported
21 12%
Died
16 9.1%
Euthanised
7 4.0%
Not known
118 67%

Problems reported at the same time

Age of the animals

Under 1 year
9
1–3 years
15
4–7 years
34
8–11 years
71
12+ years
41

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 excessive urination in dogs?
175 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 9 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).

Excessive urination with similar medicines

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