Restlessness or agitation after Maropitant (Cerenia) in cats

The FDA has received 164 reports of restlessness or agitation in cats after Maropitant. That is 4.3% of all reports for this medicine, compared with 4.9% across reports for all cat medicines.

164Reports

37%Marked serious

26%Recovered

16%Died or euthanised

Same dayTypical onset

How soon it started

Same day

88 59%

1–2 days

40 27%

3–7 days

6 4.0%

1–4 weeks

11 7.4%

Over a month

4 2.7%

How the animals did

Recovered

42 26%

Still unwell when reported

58 35%

Died

16 9.8%

Euthanised

10 6.1%

Not known

38 23%

Problems reported at the same time

59 36%

57 35%

43 26%

34 21%

30 18%

28 17%

25 15%

25 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 restlessness or agitation in cats?: 164 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).

Restlessness or agitation with similar medicines

Restlessness or agitation after Mirtazapine (Mirataz) 102 reports · 5.4% of its reports

All reported side effects of Maropitant in cats · Medicines most reported with restlessness or agitation