Breathing problems after Capromorelin (Entyce) in cats

The FDA has received 64 reports of breathing problems in cats after Capromorelin. That is 7.8% 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.

64Reports

84%Marked serious

23%Recovered

28%Died or euthanised

Same dayTypical onset

How soon it started

Same day

34 57%

1–2 days

11 18%

3–7 days

6 10%

1–4 weeks

5 8.3%

Over a month

4 6.7%

How the animals did

Recovered

15 23%

Still unwell when reported

19 30%

Died

7 11%

Euthanised

11 17%

Not known

12 19%

Problems reported at the same time

30 47%

18 28%

15 23%

14 22%

14 22%

11 17%

10 16%

10 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Capromorelin stimulates appetite.

Products with this ingredient include Entyce, Elura. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Capromorelin cause breathing problems in cats?: 64 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 Maropitant (Cerenia) 404 reports · 11% of its reports
Breathing problems after Mirtazapine (Mirataz) 97 reports · 5.2% of its reports

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