Swelling after Maropitant (Cerenia) in dogs

1,422 reports to the FDA describe swelling in dogs given Maropitant. That is 12% of all reports for this medicine, compared with 2.8% across reports for all dog medicines, so it is reported unusually often with this medicine.

1,422Reports

55%Marked serious

24%Recovered

16%Died or euthanised

Same dayTypical onset

How soon it started

Same day

674 57%

1–2 days

209 18%

3–7 days

120 10%

1–4 weeks

100 8.5%

Over a month

80 6.8%

How the animals did

Recovered

341 24%

Recovered with lasting effects

1 0.1%

Still unwell when reported

572 40%

Died

118 8.3%

Euthanised

110 7.7%

Not known

280 20%

Problems reported at the same time

485 34%

436 31%

344 24%

328 23%

226 16%

Injection site reaction

224 16%

Liver problems

220 15%

Diarrhea

209 15%

Age of the animals

Under 1 year

187

1–3 years

480

4–7 years

392

8–11 years

265

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 swelling in dogs?: 1,422 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 the same 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).

Swelling with similar medicines

Swelling after Capromorelin (Entyce) 69 reports · 4.6% of its reports

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