Swelling after Firocoxib (Previcox) in horses

66 reports to the FDA describe swelling in horses given Firocoxib. That is 13% of all reports for this medicine, compared with 19% across reports for all horse medicines.

66Reports

41%Marked serious

26%Recovered

6.1%Died or euthanised

9 daysTypical onset

How soon it started

Same day

5 14%

1–2 days

7 19%

3–7 days

4 11%

1–4 weeks

10 27%

Over a month

11 30%

How the animals did

Recovered

17 26%

Still unwell when reported

9 14%

Euthanised

4 6.1%

Not known

36 55%

Problems reported at the same time

Allergic reaction

13 20%

Injection site reaction

13 20%

Loss of appetite

10 15%

Fever

8 12%

Skin rash or irritation

6 9.1%

Itching

5 7.6%

Breathing problems

5 7.6%

Liver problems

4 6.1%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 swelling in horses?: 66 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).

All reported side effects of Firocoxib in horses · Medicines most reported with swelling