Tachycardia after Maropitant (Cerenia) in dogs

330 reports to the FDA describe tachycardia in dogs given Maropitant. That is 2.8% of all reports for this medicine, compared with 0.5% across reports for all dog medicines, so it is reported unusually often with this medicine.

330Reports

82%Marked serious

14%Recovered

46%Died or euthanised

1 daysTypical onset

How soon it started

Same day

142 49%

1–2 days

47 16%

3–7 days

24 8.4%

1–4 weeks

40 14%

Over a month

34 12%

How the animals did

Recovered

47 14%

Still unwell when reported

104 32%

Died

62 19%

Euthanised

91 28%

Not known

26 7.9%

Problems reported at the same time

170 52%

154 47%

153 46%

134 41%

133 40%

131 40%

104 32%

93 28%

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 tachycardia in dogs?: 330 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).

Tachycardia with similar medicines

Tachycardia after Capromorelin (Entyce) 25 reports · 1.7% of its reports

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