Collapse after Maropitant (Cerenia) in cats

74 reports to the FDA describe collapse in cats given Maropitant. That is 1.9% of all reports for this medicine, compared with 0.5% across reports for all cat medicines, so it is reported unusually often with this medicine.

74Reports

93%Marked serious

19%Recovered

58%Died or euthanised

Same dayTypical onset

How soon it started

Same day

35 51%

1–2 days

11 16%

3–7 days

9 13%

1–4 weeks

4 5.8%

Over a month

10 14%

How the animals did

Recovered

13 18%

Recovered with lasting effects

1 1.4%

Still unwell when reported

10 14%

Died

28 38%

Euthanised

15 20%

Not known

7 9.5%

Problems reported at the same time

43 58%

32 43%

22 30%

19 26%

18 24%

18 24%

13 18%

12 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

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 cats?: 74 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 · 2.7% of its reports

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