Abnormal ultrasound finding after Maropitant (Cerenia) in dogs

594 reports to the FDA describe abnormal ultrasound finding in dogs given Maropitant. That is 5.0% of all reports for this medicine, compared with 0.5% across reports for all dog medicines, so it is reported unusually often with this medicine.

594Reports
76%Marked serious
9.1%Recovered
45%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
101 20%
1–2 days
92 18%
3–7 days
73 15%
1–4 weeks
111 22%
Over a month
125 25%

How the animals did

Recovered
51 8.6%
Recovered with lasting effects
3 0.5%
Still unwell when reported
219 37%
Died
88 15%
Euthanised
179 30%
Not known
54 9.1%

Problems reported at the same time

Age of the animals

Under 1 year
30
1–3 years
79
4–7 years
159
8–11 years
211
12+ years
114

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 abnormal ultrasound finding in dogs?
594 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).

Abnormal ultrasound finding with similar medicines

All reported side effects of Maropitant in dogs · Medicines most reported with abnormal ultrasound finding