Vomiting after Fluoxetine in cats

The FDA has received 46 reports of vomiting in cats after Fluoxetine. That is 19% of all reports for this medicine, compared with 18% across reports for all cat medicines.

46Reports

35%Marked serious

43%Recovered

6.5%Died or euthanised

32 daysTypical onset

How soon it started

Same day

7 23%

1–2 days

1 3.2%

3–7 days

1 3.2%

1–4 weeks

6 19%

Over a month

16 52%

How the animals did

Recovered

18 39%

Recovered with lasting effects

2 4.3%

Still unwell when reported

13 28%

Died

1 2.2%

Euthanised

2 4.3%

Not known

10 22%

Problems reported at the same time

Loss of appetite

15 33%

Lethargy

8 17%

Diarrhea

8 17%

Didn't work as expected

7 15%

Liver problems

5 11%

Weight loss

5 11%

Kidney problems

5 11%

Breathing problems

4 8.7%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Fluoxetine treats anxiety and behaviour problems.

Questions owners ask

Can Fluoxetine cause vomiting in cats?: 46 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 32 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 Gabapentin 273 reports · 14% of its reports

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