Breathing problems after Maropitant (Cerenia) in cats

404 reports to the FDA describe breathing problems in cats given Maropitant. That is 11% of all reports for this medicine, compared with 4.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

404Reports

80%Marked serious

16%Recovered

40%Died or euthanised

Same dayTypical onset

How soon it started

Same day

213 59%

1–2 days

67 19%

3–7 days

27 7.5%

1–4 weeks

33 9.1%

Over a month

22 6.1%

How the animals did

Recovered

63 16%

Recovered with lasting effects

1 0.2%

Still unwell when reported

116 29%

Died

82 20%

Euthanised

81 20%

Not known

61 15%

Problems reported at the same time

161 40%

134 33%

131 32%

114 28%

99 25%

62 15%

58 14%

56 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

124

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 breathing problems in cats?: 404 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).

Breathing problems with similar medicines

Breathing problems after Mirtazapine (Mirataz) 97 reports · 5.2% of its reports
Breathing problems after Capromorelin (Entyce) 64 reports · 7.8% of its reports

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