Collapse after Maropitant (Cerenia) in dogs

The FDA has received 409 reports of collapse in dogs after Maropitant. That is 3.4% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported unusually often with this medicine.

409Reports

85%Marked serious

13%Recovered

47%Died or euthanised

Same dayTypical onset

How soon it started

Same day

227 67%

1–2 days

27 8.0%

3–7 days

20 5.9%

1–4 weeks

29 8.6%

Over a month

36 11%

How the animals did

Recovered

52 13%

Recovered with lasting effects

1 0.2%

Still unwell when reported

126 31%

Died

126 31%

Euthanised

68 17%

Not known

36 8.8%

Problems reported at the same time

194 47%

181 44%

167 41%

129 32%

114 28%

105 26%

102 25%

89 22%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

114

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 collapse in dogs?: 409 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).

Collapse with similar medicines

Collapse after Capromorelin (Entyce) 22 reports · 1.5% of its reports

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