Dehydration after Maropitant (Cerenia) in dogs

The FDA has received 570 reports of dehydration in dogs after Maropitant. That is 4.8% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

570Reports

77%Marked serious

9.1%Recovered

41%Died or euthanised

3 daysTypical onset

How soon it started

Same day

149 30%

1–2 days

97 20%

3–7 days

68 14%

1–4 weeks

82 17%

Over a month

98 20%

How the animals did

Recovered

51 8.9%

Recovered with lasting effects

1 0.2%

Still unwell when reported

221 39%

Died

87 15%

Euthanised

147 26%

Not known

63 11%

Problems reported at the same time

389 68%

377 66%

344 60%

267 47%

233 41%

218 38%

214 38%

115 20%

Age of the animals

Under 1 year

1–3 years

114

4–7 years

154

8–11 years

155

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 dehydration in dogs?: 570 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 3 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).

Dehydration with similar medicines

Dehydration after Capromorelin (Entyce) 57 reports · 3.8% of its reports
Dehydration after Mirtazapine (Mirataz) 21 reports · 7.3% of its reports

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