Not urinating after Maropitant (Cerenia) in cats

47 reports to the FDA describe not urinating in cats given Maropitant. That is 1.2% of all reports for this medicine, compared with 0.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

47Reports

62%Marked serious

21%Recovered

36%Died or euthanised

1 daysTypical onset

How soon it started

Same day

14 34%

1–2 days

15 37%

3–7 days

4 9.8%

1–4 weeks

7 17%

Over a month

1 2.4%

How the animals did

Recovered

10 21%

Still unwell when reported

10 21%

Died

4 8.5%

Euthanised

13 28%

Not known

10 21%

Problems reported at the same time

29 62%

17 36%

14 30%

14 30%

12 26%

11 23%

11 23%

Decreased bowel movements

10 21%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

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 not urinating in cats?: 47 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).

All reported side effects of Maropitant in cats · Medicines most reported with not urinating