Pacing after Mirtazapine (Mirataz) in cats

25 reports to the FDA describe pacing in cats given Mirtazapine. That is 1.3% of all reports for this medicine, compared with 0.3% across reports for all cat medicines, so it is reported unusually often with this medicine.

25Reports

36%Marked serious

24%Recovered

20%Died or euthanised

8 daysTypical onset

How soon it started

Same day

7 29%

1–2 days

2 8.3%

3–7 days

3 13%

1–4 weeks

5 21%

Over a month

7 29%

How the animals did

Recovered

6 24%

Still unwell when reported

6 24%

Died

2 8.0%

Euthanised

3 12%

Not known

8 32%

Problems reported at the same time

13 52%

9 36%

8 32%

7 28%

5 20%

Restlessness or agitation

5 20%

Kidney problems

4 16%

Lethargy

3 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 pacing in cats?: 25 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 8 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).

Pacing with similar medicines

Pacing after Maropitant (Cerenia) 45 reports · 1.2% of its reports

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