Blood in vomit after Maropitant (Cerenia) in dogs

The FDA has received 193 reports of blood in vomit in dogs after Maropitant. That is 1.6% of all reports for this medicine, compared with 0.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

193Reports

69%Marked serious

15%Recovered

35%Died or euthanised

2 daysTypical onset

How soon it started

Same day

61 36%

1–2 days

39 23%

3–7 days

30 18%

1–4 weeks

21 12%

Over a month

20 12%

How the animals did

Recovered

29 15%

Still unwell when reported

76 39%

Died

45 23%

Euthanised

22 11%

Not known

21 11%

Problems reported at the same time

100 52%

96 50%

81 42%

76 39%

66 34%

55 28%

46 24%

37 19%

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 blood in vomit in dogs?: 193 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 2 days 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).

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