Weight loss after Firocoxib (Previcox) in dogs

274 reports to the FDA describe weight loss in dogs given Firocoxib. That is 3.4% of all reports for this medicine, compared with 1.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

274Reports
37%Marked serious
5.5%Recovered
26%Died or euthanised
13 daysTypical onset
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How soon it started

Same day
13 12%
1–2 days
10 9.5%
3–7 days
19 18%
1–4 weeks
29 28%
Over a month
34 32%

How the animals did

Recovered
12 4.4%
Recovered with lasting effects
3 1.1%
Still unwell when reported
35 13%
Died
45 16%
Euthanised
26 9.5%
Not known
153 56%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
20
4–7 years
58
8–11 years
108
12+ years
82

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 weight loss in dogs?
274 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 13 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).

Weight loss with similar medicines

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