Tremors after Maropitant (Cerenia) in dogs

The FDA has received 830 reports of tremors in dogs after Maropitant. That is 7.0% of all reports for this medicine, compared with 3.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

830Reports

59%Marked serious

18%Recovered

24%Died or euthanised

1 daysTypical onset

How soon it started

Same day

294 44%

1–2 days

132 20%

3–7 days

68 10%

1–4 weeks

73 11%

Over a month

98 15%

How the animals did

Recovered

146 18%

Recovered with lasting effects

2 0.2%

Still unwell when reported

318 38%

Died

96 12%

Euthanised

105 13%

Not known

163 20%

Problems reported at the same time

360 43%

332 40%

324 39%

199 24%

189 23%

165 20%

144 17%

144 17%

Age of the animals

Under 1 year

1–3 years

197

4–7 years

197

8–11 years

177

12+ years

160

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 tremors 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 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).

Tremors with similar medicines

Tremors after Capromorelin (Entyce) 52 reports · 3.4% of its reports
Tremors after Mirtazapine (Mirataz) 21 reports · 7.3% of its reports

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