Vomiting after Mirtazapine (Mirataz) in cats

The FDA has received 266 reports of vomiting in cats after Mirtazapine. That is 14% of all reports for this medicine, compared with 18% across reports for all cat medicines.

266Reports

59%Marked serious

21%Recovered

24%Died or euthanised

4 daysTypical onset

How soon it started

Same day

62 27%

1–2 days

42 19%

3–7 days

26 12%

1–4 weeks

31 14%

Over a month

65 29%

How the animals did

Recovered

55 21%

Still unwell when reported

72 27%

Died

19 7.1%

Euthanised

45 17%

Not known

75 28%

Problems reported at the same time

125 47%

72 27%

63 24%

54 20%

49 18%

41 15%

38 14%

33 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

150

About this medicine

Mirtazapine stimulates appetite (cats: ointment applied to the ear).

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

Questions owners ask

Can Mirtazapine cause vomiting in cats?: 266 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 4 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).

Vomiting with similar medicines

Vomiting after Maropitant (Cerenia) 912 reports · 24% of its reports
Vomiting after Capromorelin (Entyce) 148 reports · 18% of its reports

All reported side effects of Mirtazapine in cats · Medicines most reported with vomiting