Injection site reaction after Maropitant (Cerenia) in dogs

The FDA has received 830 reports of injection site reaction in dogs after Maropitant. That is 7.0% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

830Reports
29%Marked serious
17%Recovered
7.2%Died or euthanised
2 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
184 37%
1–2 days
104 21%
3–7 days
91 18%
1–4 weeks
76 15%
Over a month
47 9.4%

How the animals did

Recovered
137 17%
Recovered with lasting effects
1 0.1%
Still unwell when reported
231 28%
Died
42 5.1%
Euthanised
18 2.2%
Not known
401 48%

Problems reported at the same time

Age of the animals

Under 1 year
105
1–3 years
169
4–7 years
160
8–11 years
135
12+ years
55

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 injection site reaction in dogs?
830 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 2 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).

All reported side effects of Maropitant in dogs · Medicines most reported with injection site reaction