Loss of appetite after Firocoxib (Previcox) in dogs

The FDA has received 1,798 reports of loss of appetite in dogs after Firocoxib. That is 22% 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.

1,798Reports
33%Marked serious
9.1%Recovered
28%Died or euthanised
5 daysTypical onset
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How soon it started

Same day
69 11%
1–2 days
125 19%
3–7 days
183 28%
1–4 weeks
141 22%
Over a month
126 20%

How the animals did

Recovered
157 8.7%
Recovered with lasting effects
7 0.4%
Still unwell when reported
161 9.0%
Died
374 21%
Euthanised
127 7.1%
Not known
972 54%

Problems reported at the same time

Age of the animals

Under 1 year
50
1–3 years
171
4–7 years
370
8–11 years
696
12+ years
439

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 loss of appetite in dogs?
1,798 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 5 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).

Loss of appetite with similar medicines

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