Blood problems after Maropitant (Cerenia) in dogs

1,012 reports to the FDA describe blood problems in dogs given Maropitant. That is 8.5% of all reports for this medicine, compared with 1.8% across reports for all dog medicines, so it is reported unusually often with this medicine.

1,012Reports

79%Marked serious

6.8%Recovered

48%Died or euthanised

5 daysTypical onset

How soon it started

Same day

165 20%

1–2 days

158 19%

3–7 days

152 18%

1–4 weeks

158 19%

Over a month

195 24%

How the animals did

Recovered

68 6.7%

Recovered with lasting effects

1 0.1%

Still unwell when reported

364 36%

Died

181 18%

Euthanised

305 30%

Not known

93 9.2%

Problems reported at the same time

572 57%

519 51%

517 51%

510 50%

483 48%

341 34%

293 29%

290 29%

Age of the animals

Under 1 year

106

1–3 years

166

4–7 years

290

8–11 years

295

12+ years

153

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 blood problems in dogs?: 1,012 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 5 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).

Blood problems with similar medicines

Blood problems after Capromorelin (Entyce) 112 reports · 7.4% of its reports
Blood problems after Mirtazapine (Mirataz) 45 reports · 16% of its reports

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