Vomiting after Maropitant (Cerenia) in cats

The FDA has received 912 reports of vomiting in cats after Maropitant. That is 24% of all reports for this medicine, compared with 18% across reports for all cat medicines.

912Reports

62%Marked serious

20%Recovered

22%Died or euthanised

1 daysTypical onset

How soon it started

Same day

357 44%

1–2 days

148 18%

3–7 days

106 13%

1–4 weeks

85 11%

Over a month

109 14%

How the animals did

Recovered

177 19%

Recovered with lasting effects

1 0.1%

Still unwell when reported

348 38%

Died

85 9.3%

Euthanised

112 12%

Not known

189 21%

Problems reported at the same time

459 50%

342 38%

195 21%

186 20%

Didn't work as expected

171 19%

Weight loss

148 16%

Dehydration

133 15%

Kidney problems

131 14%

Age of the animals

Under 1 year

1–3 years

140

4–7 years

160

8–11 years

208

12+ years

300

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 vomiting in cats?: 912 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).

Vomiting with similar medicines

Vomiting after Mirtazapine (Mirataz) 266 reports · 14% of its reports
Vomiting after Capromorelin (Entyce) 148 reports · 18% of its reports

All reported side effects of Maropitant in cats · Medicines most reported with vomiting