Loss of appetite after Mirtazapine (Mirataz) in cats

486 reports to the FDA describe loss of appetite in cats given Mirtazapine. That is 26% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported unusually often with this medicine.

486Reports

70%Marked serious

13%Recovered

34%Died or euthanised

4 daysTypical onset

How soon it started

Same day

95 22%

1–2 days

93 21%

3–7 days

61 14%

1–4 weeks

95 22%

Over a month

92 21%

How the animals did

Recovered

62 13%

Recovered with lasting effects

2 0.4%

Still unwell when reported

158 33%

Died

58 12%

Euthanised

108 22%

Not known

98 20%

Problems reported at the same time

206 42%

164 34%

130 27%

125 26%

105 22%

94 19%

72 15%

70 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

108

12+ years

228

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 loss of appetite in cats?: 486 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).

Loss of appetite with similar medicines

Loss of appetite after Maropitant (Cerenia) 1,270 reports · 33% of its reports
Loss of appetite after Capromorelin (Entyce) 167 reports · 20% of its reports

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