Decreased heart rate after Carprofen (Rimadyl) in dogs

25 reports to the FDA describe decreased heart rate in dogs given Carprofen. That is 0.1% of all reports for this medicine, compared with 0.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

25Reports

80%Marked serious

48%Recovered

32%Died or euthanised

Same dayTypical onset

How soon it started

Same day

18 72%

1–2 days

3 12%

3–7 days

2 8.0%

1–4 weeks

1 4.0%

Over a month

1 4.0%

How the animals did

Recovered

12 48%

Still unwell when reported

4 16%

Died

6 24%

Euthanised

2 8.0%

Not known

1 4.0%

Problems reported at the same time

8 32%

6 24%

5 20%

5 20%

4 16%

4 16%

Didn't work as expected

4 16%

Unresponsive

3 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 decreased heart rate in dogs?: 25 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 the same day 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 Carprofen in dogs · Medicines most reported with decreased heart rate