Loose stool after Maropitant (Cerenia) in dogs

259 reports to the FDA describe loose stool in dogs given Maropitant. That is 2.2% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported unusually often with this medicine.

259Reports

63%Marked serious

13%Recovered

26%Died or euthanised

4 daysTypical onset

How soon it started

Same day

67 29%

1–2 days

39 17%

3–7 days

25 11%

1–4 weeks

48 21%

Over a month

52 23%

How the animals did

Recovered

33 13%

Recovered with lasting effects

1 0.4%

Still unwell when reported

130 50%

Died

22 8.5%

Euthanised

46 18%

Not known

27 10%

Problems reported at the same time

172 66%

170 66%

139 54%

94 36%

68 26%

62 24%

55 21%

50 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 loose stool in dogs?: 259 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 4 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).

Loose stool with similar medicines

Loose stool after Capromorelin (Entyce) 33 reports · 2.2% of its reports

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