Excessive thirst after Firocoxib (Previcox) in dogs

The FDA has received 351 reports of excessive thirst in dogs after Firocoxib. That is 4.4% of all reports for this medicine, compared with 1.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

351Reports
28%Marked serious
6.6%Recovered
21%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
13 12%
1–2 days
14 13%
3–7 days
33 30%
1–4 weeks
19 17%
Over a month
32 29%

How the animals did

Recovered
22 6.3%
Recovered with lasting effects
1 0.3%
Still unwell when reported
28 8.0%
Died
61 17%
Euthanised
14 4.0%
Not known
225 64%

Problems reported at the same time

Age of the animals

Under 1 year
13
1–3 years
26
4–7 years
64
8–11 years
140
12+ years
91

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 thirst in dogs?
351 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 7 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 thirst with similar medicines

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