Seizures after Maropitant (Cerenia) in cats

143 reports to the FDA describe seizures in cats given Maropitant. That is 3.7% of all reports for this medicine, compared with 2.6% across reports for all cat medicines.

143Reports

94%Marked serious

20%Recovered

43%Died or euthanised

1 daysTypical onset

How soon it started

Same day

57 46%

1–2 days

41 33%

3–7 days

8 6.5%

1–4 weeks

9 7.3%

Over a month

9 7.3%

How the animals did

Recovered

28 20%

Still unwell when reported

32 22%

Died

37 26%

Euthanised

25 17%

Not known

21 15%

Problems reported at the same time

62 43%

27 19%

25 17%

25 17%

21 15%

21 15%

21 15%

18 13%

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 seizures in cats?: 143 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 1 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).

Seizures with similar medicines

Seizures after Mirtazapine (Mirataz) 65 reports · 3.5% of its reports

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