Didn't work as expected after Maropitant (Cerenia) in dogs

2,045 reports to the FDA describe didn't work as expected in dogs given Maropitant. That is 17% of all reports for this medicine, compared with 13% across reports for all dog medicines.

2,045Reports

44%Marked serious

15%Recovered

17%Died or euthanised

1 daysTypical onset

How soon it started

Same day

600 40%

1–2 days

258 17%

3–7 days

152 10%

1–4 weeks

179 12%

Over a month

301 20%

How the animals did

Recovered

297 15%

Recovered with lasting effects

4 0.2%

Still unwell when reported

771 38%

Died

166 8.1%

Euthanised

182 8.9%

Not known

625 31%

Problems reported at the same time

714 35%

489 24%

404 20%

366 18%

342 17%

259 13%

218 11%

144 7.0%

Age of the animals

Under 1 year

404

1–3 years

405

4–7 years

406

8–11 years

414

12+ years

276

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 didn't work as expected in dogs?: 2,045 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).

Didn't work as expected with similar medicines

Didn't work as expected after Capromorelin (Entyce) 357 reports · 24% of its reports
Didn't work as expected after Mirtazapine (Mirataz) 49 reports · 17% of its reports

All reported side effects of Maropitant in dogs · Medicines most reported with didn't work as expected