Hyperphosphataemia after Carprofen (Rimadyl) in dogs

1,228 reports to the FDA describe hyperphosphataemia in dogs given Carprofen. That is 2.6% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

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How soon it started

How the animals did

Problems reported at the same time

Age of the animals

About this medicine

Carprofen relieves pain and inflammation from arthritis or after surgery.

Products with this ingredient include Rimadyl, Novox, Vetprofen. 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 Carprofen cause hyperphosphataemia in dogs?

1,228 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 6 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).

Hyperphosphataemia with similar medicines

• Hyperphosphataemia after Deracoxib (Deramaxx) 610 reports · 5.5% of its reports
• Hyperphosphataemia after Grapiprant (Galliprant) 127 reports · 1.4% of its reports
• Hyperphosphataemia after Meloxicam (Metacam) 310 reports · 3.8% of its reports
• Hyperphosphataemia after Firocoxib (Previcox) 325 reports · 4.1% of its reports

All reported side effects of Carprofen in dogs · Medicines most reported with hyperphosphataemia