Bradycardia after Maropitant (Cerenia) in dogs

The FDA has received 181 reports of bradycardia in dogs after Maropitant. That is 1.5% of all reports for this medicine, compared with 0.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

181Reports

74%Marked serious

35%Recovered

25%Died or euthanised

Same dayTypical onset

How soon it started

Same day

103 69%

1–2 days

15 10%

3–7 days

10 6.7%

1–4 weeks

10 6.7%

Over a month

12 8.0%

How the animals did

Recovered

62 34%

Recovered with lasting effects

1 0.6%

Still unwell when reported

53 29%

Died

24 13%

Euthanised

21 12%

Not known

20 11%

Problems reported at the same time

54 30%

53 29%

51 28%

45 25%

36 20%

33 18%

30 17%

29 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 bradycardia in dogs?: 181 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).

Bradycardia with similar medicines

Bradycardia after Capromorelin (Entyce) 24 reports · 1.6% of its reports

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