Hyperphosphataemia after Maropitant (Cerenia) in dogs

423 reports to the FDA describe hyperphosphataemia in dogs given Maropitant. That is 3.6% 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.

423Reports

78%Marked serious

6.9%Recovered

60%Died or euthanised

3 daysTypical onset

How soon it started

Same day

88 26%

1–2 days

72 21%

3–7 days

51 15%

1–4 weeks

65 19%

Over a month

62 18%

How the animals did

Recovered

29 6.9%

Still unwell when reported

99 23%

Died

104 25%

Euthanised

149 35%

Not known

42 9.9%

Problems reported at the same time

363 86%

262 62%

262 62%

256 61%

251 59%

205 48%

138 33%

119 28%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

124

12+ years

About this medicine

Maropitant prevents vomiting and motion sickness.

Products with this ingredient include Cerenia. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Maropitant cause hyperphosphataemia in dogs?: 423 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 3 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 Capromorelin (Entyce) 57 reports · 3.8% of its reports
Hyperphosphataemia after Mirtazapine (Mirataz) 23 reports · 8.0% of its reports

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