Fever after Maropitant (Cerenia) in cats

329 reports to the FDA describe fever in cats given Maropitant. That is 8.6% of all reports for this medicine, compared with 3.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

329Reports

61%Marked serious

26%Recovered

17%Died or euthanised

1 daysTypical onset

How soon it started

Same day

125 42%

1–2 days

73 24%

3–7 days

30 10%

1–4 weeks

51 17%

Over a month

20 6.7%

How the animals did

Recovered

84 26%

Still unwell when reported

145 44%

Died

27 8.2%

Euthanised

29 8.8%

Not known

44 13%

Problems reported at the same time

168 51%

156 47%

97 29%

56 17%

56 17%

55 17%

51 16%

48 15%

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 fever in cats?: 329 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).

Fever with similar medicines

Fever after Mirtazapine (Mirataz) 71 reports · 3.8% of its reports
Fever after Capromorelin (Entyce) 28 reports · 3.4% of its reports

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