Discoloured urine after Carprofen (Rimadyl) in dogs

422 reports to the FDA describe discoloured urine in dogs given Carprofen. That is 0.9% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

422Reports
28%Marked serious
4.7%Recovered
37%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
29 17%
1–2 days
24 14%
3–7 days
42 24%
1–4 weeks
48 28%
Over a month
30 17%

How the animals did

Recovered
18 4.3%
Recovered with lasting effects
2 0.5%
Still unwell when reported
86 20%
Died
108 26%
Euthanised
48 11%
Not known
160 38%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
42
4–7 years
125
8–11 years
154
12+ years
84

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 discoloured urine in dogs?
422 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 7 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).

Discoloured urine with similar medicines

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